Postcode,In Use?,Latitude,Longitude,Easting,Northing,Grid Ref,Introduced,Terminated,Parish,Altitude,Country,Last Updated,Quality,LSOA Code,LSOA Name,LSOA Code 2021,LSOA Name 2021 EN4 0PH,Yes,51.679165,-0.186120,525508,199379,TQ255993,1980-01-01,,"Hertsmere, unparished area",131,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN4 0PJ,Yes,51.676696,-0.184656,525616,199107,TQ256991,1980-01-01,,"Hertsmere, unparished area",120,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN4 0PL,Yes,51.675208,-0.182604,525762,198945,TQ257989,1980-01-01,,"Hertsmere, unparished area",112,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4AA,Yes,51.678918,-0.187041,525445,199350,TQ254993,1980-01-01,,"Hertsmere, unparished area",132,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4BF,Yes,51.682782,-0.190329,525207,199774,TQ252997,2016-04-01,,"Hertsmere, unparished area",131,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4FA,Yes,51.682191,-0.188169,525358,199712,TQ253997,2023-11-01,,"Hertsmere, unparished area",126,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4FB,Yes,51.682286,-0.186747,525456,199725,TQ254997,2023-12-01,,"Hertsmere, unparished area",126,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4RG,Yes,51.676088,-0.190090,525242,199030,TQ252990,1980-01-01,,"Hertsmere, unparished area",131,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4RH,Yes,51.673690,-0.191458,525154,198761,TQ251987,1980-01-01,,"Hertsmere, unparished area",132,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4RJ,Yes,51.677930,-0.188281,525362,199238,TQ253992,1980-01-01,,"Hertsmere, unparished area",130,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4RN,Yes,51.672035,-0.201373,524473,198560,TQ244985,1980-01-01,,"Hertsmere, unparished area",123,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4RP,Yes,51.679779,-0.206201,524118,199413,TQ241994,1980-01-01,,"Hertsmere, unparished area",120,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4RQ,No,51.682950,-0.186055,525502,199800,TQ255998,1992-01-01,1995-07-01,"Hertsmere, unparished area",122,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4RR,No,51.682290,-0.187572,525399,199724,TQ253997,1980-01-01,2023-12-01,"Hertsmere, unparished area",127,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4RY,Yes,51.681629,-0.194903,524894,199638,TQ248996,1980-01-01,,"Hertsmere, unparished area",129,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4RZ,Yes,51.683921,-0.197127,524734,199889,TQ247998,1980-01-01,,"Hertsmere, unparished area",120,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4SA,Yes,51.681828,-0.188501,525336,199671,TQ253996,1980-01-01,,"Hertsmere, unparished area",130,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4SB,Yes,51.673210,-0.197653,524727,198697,TQ247986,1980-01-01,,"Hertsmere, unparished area",127,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4SE,No,51.677869,-0.188384,525355,199231,TQ253992,1980-01-01,2003-02-01,"Hertsmere, unparished area",130,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4SG,Yes,51.681042,-0.186522,525475,199587,TQ254995,1980-01-01,,"Hertsmere, unparished area",131,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4SH,No,51.680276,-0.187609,525402,199500,TQ254995,1993-01-01,1994-12-01,"Hertsmere, unparished area",133,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN5 4SZ,Yes,51.672671,-0.198267,524686,198636,TQ246986,2004-07-01,,"Hertsmere, unparished area",129,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 1JY,No,51.684197,-0.179496,525952,199950,TQ259999,1992-01-01,1994-05-01,"Hertsmere, unparished area",120,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2AH,No,51.692958,-0.191255,525115,200905,TL251009,1996-06-01,1997-12-01,"Hertsmere, unparished area",103,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2AL,No,51.693823,-0.191409,525102,201000,TL251010,1986-04-01,1990-12-01,"Hertsmere, unparished area",100,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2AP,Yes,51.694580,-0.195618,524809,201077,TL248010,1980-01-01,,"Hertsmere, unparished area",103,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2AR,Yes,51.693206,-0.197467,524685,200921,TL246009,1980-01-01,,"Hertsmere, unparished area",107,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2AU,Yes,51.696710,-0.196677,524730,201312,TL247013,1980-01-01,,"Hertsmere, unparished area",99,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2AW,Yes,51.694170,-0.191163,525118,201039,TL251010,1980-01-01,,"Hertsmere, unparished area",100,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2AX,Yes,51.698156,-0.199470,524533,201469,TL245014,1980-01-01,,"Hertsmere, unparished area",100,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2BN,Yes,51.691653,-0.201189,524432,200742,TL244007,1980-01-01,,"Hertsmere, unparished area",113,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2BP,Yes,51.689732,-0.200238,524503,200530,TL245005,1980-01-01,,"Hertsmere, unparished area",110,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2BQ,Yes,51.695672,-0.195256,524831,201199,TL248011,1994-12-01,,"Hertsmere, unparished area",102,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2BS,Yes,51.689345,-0.200760,524468,200486,TL244004,1980-01-01,,"Hertsmere, unparished area",110,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2BU,Yes,51.690748,-0.200777,524463,200642,TL244006,1980-01-01,,"Hertsmere, unparished area",112,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2BW,Yes,51.691933,-0.200628,524470,200775,TL244007,1980-01-01,,"Hertsmere, unparished area",111,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2BX,Yes,51.691582,-0.202393,524349,200732,TL243007,1980-01-01,,"Hertsmere, unparished area",116,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2BZ,Yes,51.691385,-0.204209,524224,200707,TL242007,1980-01-01,,"Hertsmere, unparished area",117,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2DA,Yes,51.692328,-0.204158,524225,200812,TL242008,1980-01-01,,"Hertsmere, unparished area",117,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2DB,Yes,51.692314,-0.205562,524128,200808,TL241008,1980-01-01,,"Hertsmere, unparished area",113,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2DF,Yes,51.693182,-0.204688,524186,200907,TL241009,1980-01-01,,"Hertsmere, unparished area",113,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2DG,Yes,51.693407,-0.202972,524304,200934,TL243009,1980-01-01,,"Hertsmere, unparished area",111,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2DH,Yes,51.693092,-0.204127,524225,200897,TL242008,1980-01-01,,"Hertsmere, unparished area",113,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2DP,Yes,51.697380,-0.202250,524343,201377,TL243013,1980-01-01,,"Hertsmere, unparished area",105,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2DQ,Yes,51.692396,-0.202722,524324,200822,TL243008,1980-01-01,,"Hertsmere, unparished area",115,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2DR,Yes,51.695275,-0.202797,524311,201142,TL243011,1980-01-01,,"Hertsmere, unparished area",106,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2DS,Yes,51.694228,-0.203735,524249,201024,TL242010,1980-01-01,,"Hertsmere, unparished area",109,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2DU,Yes,51.690850,-0.206835,524044,200644,TL240006,1980-01-01,,"Hertsmere, unparished area",108,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2DX,Yes,51.691347,-0.207018,524030,200698,TL240006,1980-01-01,,"Hertsmere, unparished area",102,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2DZ,Yes,51.694547,-0.194636,524877,201075,TL248010,1980-01-01,,"Hertsmere, unparished area",101,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2EA,Yes,51.694464,-0.193886,524929,201067,TL249010,1980-01-01,,"Hertsmere, unparished area",100,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2EB,Yes,51.693413,-0.195115,524847,200949,TL248009,1980-01-01,,"Hertsmere, unparished area",101,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2ED,Yes,51.692253,-0.195146,524848,200819,TL248008,1980-01-01,,"Hertsmere, unparished area",101,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2EE,Yes,51.691756,-0.193256,524980,200767,TL249007,1980-01-01,,"Hertsmere, unparished area",100,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2EF,Yes,51.691059,-0.191157,525127,200693,TL251006,1980-01-01,,"Hertsmere, unparished area",102,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2EG,Yes,51.691416,-0.195078,524855,200726,TL248007,1980-01-01,,"Hertsmere, unparished area",102,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2EH,Yes,51.691101,-0.196277,524773,200689,TL247006,1980-01-01,,"Hertsmere, unparished area",103,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2EL,Yes,51.690494,-0.194218,524917,200625,TL249006,1980-01-01,,"Hertsmere, unparished area",104,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2EN,Yes,51.689711,-0.192383,525046,200541,TL250005,1980-01-01,,"Hertsmere, unparished area",105,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2EP,Yes,51.690962,-0.198352,524630,200670,TL246006,1980-01-01,,"Hertsmere, unparished area",106,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2EQ,Yes,51.692027,-0.196790,524735,200792,TL247007,1980-01-01,,"Hertsmere, unparished area",104,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2ER,Yes,51.690299,-0.197322,524703,200598,TL247005,1980-01-01,,"Hertsmere, unparished area",106,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2ES,Yes,51.690157,-0.198601,524615,200580,TL246005,1980-01-01,,"Hertsmere, unparished area",107,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2ET,Yes,51.690584,-0.199466,524554,200626,TL245006,1980-01-01,,"Hertsmere, unparished area",108,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2EU,Yes,51.691372,-0.198668,524607,200715,TL246007,1980-01-01,,"Hertsmere, unparished area",107,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2EW,Yes,51.689649,-0.195973,524798,200528,TL247005,1980-01-01,,"Hertsmere, unparished area",106,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2EX,Yes,51.692713,-0.197009,524718,200867,TL247008,1980-01-01,,"Hertsmere, unparished area",105,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2HA,No,51.694766,-0.194265,524902,201100,TL249011,1981-06-01,1990-12-01,"Hertsmere, unparished area",101,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2HE,Yes,51.692950,-0.186669,525432,200911,TL254009,1980-01-01,,"Hertsmere, unparished area",111,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2HG,No,51.694766,-0.194265,524902,201100,TL249011,1980-01-01,1990-12-01,"Hertsmere, unparished area",101,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JE,Yes,51.694276,-0.197468,524682,201040,TL246010,1980-01-01,,"Hertsmere, unparished area",105,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JF,Yes,51.694408,-0.198461,524613,201053,TL246010,1980-01-01,,"Hertsmere, unparished area",107,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JG,Yes,51.693437,-0.199064,524574,200944,TL245009,1980-01-01,,"Hertsmere, unparished area",111,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JH,Yes,51.692141,-0.199564,524543,200799,TL245007,1980-01-01,,"Hertsmere, unparished area",109,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JJ,Yes,51.693239,-0.200808,524454,200919,TL244009,1980-01-01,,"Hertsmere, unparished area",112,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2JL,Yes,51.693787,-0.202508,524335,200977,TL243009,1980-01-01,,"Hertsmere, unparished area",110,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2JN,Yes,51.695176,-0.197505,524677,201140,TL246011,1980-01-01,,"Hertsmere, unparished area",103,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JP,Yes,51.695230,-0.198674,524596,201144,TL245011,1980-01-01,,"Hertsmere, unparished area",104,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JR,Yes,51.695302,-0.199294,524553,201151,TL245011,1980-01-01,,"Hertsmere, unparished area",104,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JS,Yes,51.696577,-0.197970,524641,201295,TL246012,1980-01-01,,"Hertsmere, unparished area",98,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JT,Yes,51.697139,-0.198251,524620,201358,TL246013,1990-02-01,,"Hertsmere, unparished area",98,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JW,Yes,51.695851,-0.196971,524712,201216,TL247012,1980-01-01,,"Hertsmere, unparished area",100,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JY,Yes,51.697324,-0.199763,524515,201376,TL245013,1980-01-01,,"Hertsmere, unparished area",102,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2JZ,Yes,51.697034,-0.201396,524403,201340,TL244013,1980-01-01,,"Hertsmere, unparished area",104,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2LA,Yes,51.696576,-0.200285,524481,201291,TL244012,1980-01-01,,"Hertsmere, unparished area",102,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2LB,Yes,51.696038,-0.202130,524355,201228,TL243012,1980-01-01,,"Hertsmere, unparished area",104,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2LD,Yes,51.695527,-0.201065,524430,201173,TL244011,1980-01-01,,"Hertsmere, unparished area",104,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2LE,Yes,51.694116,-0.199934,524512,201018,TL245010,1980-01-01,,"Hertsmere, unparished area",110,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2LF,Yes,51.694621,-0.201766,524384,201071,TL243010,1980-01-01,,"Hertsmere, unparished area",108,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2LG,Yes,51.695563,-0.199891,524511,201179,TL245011,1980-01-01,,"Hertsmere, unparished area",103,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023568,Hertsmere 002B,E01023568,Hertsmere 002B EN6 2LH,No,51.691981,-0.188588,525302,200800,TL253008,1993-01-01,1995-01-01,"Hertsmere, unparished area",105,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2LL,Yes,51.693470,-0.193564,524954,200957,TL249009,1980-01-01,,"Hertsmere, unparished area",99,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2LN,Yes,51.692666,-0.190413,525174,200873,TL251008,1980-01-01,,"Hertsmere, unparished area",105,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2LP,Yes,51.692280,-0.191629,525091,200828,TL250008,1994-05-01,,"Hertsmere, unparished area",102,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2LQ,No,51.691016,-0.184286,525602,200700,TL256007,1990-02-01,1990-12-01,"Hertsmere, unparished area",107,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2LS,Yes,51.693056,-0.192987,524995,200912,TL249009,1980-01-01,,"Hertsmere, unparished area",99,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2LT,Yes,51.692872,-0.193892,524933,200890,TL249008,1980-01-01,,"Hertsmere, unparished area",99,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2LU,Yes,51.691933,-0.191875,525075,200789,TL250007,1980-01-01,,"Hertsmere, unparished area",101,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2LW,Yes,51.692512,-0.190911,525140,200855,TL251008,1980-01-01,,"Hertsmere, unparished area",104,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2LX,Yes,51.691125,-0.189635,525232,200703,TL252007,1980-01-01,,"Hertsmere, unparished area",103,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2LY,Yes,51.690900,-0.187879,525354,200681,TL253006,1980-01-01,,"Hertsmere, unparished area",103,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2LZ,Yes,51.690726,-0.188841,525288,200660,TL252006,1980-01-01,,"Hertsmere, unparished area",103,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2NA,Yes,51.690197,-0.189499,525244,200600,TL252006,1980-01-01,,"Hertsmere, unparished area",106,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2NB,Yes,51.690133,-0.187707,525368,200596,TL253005,1980-01-01,,"Hertsmere, unparished area",104,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2ND,Yes,51.689993,-0.186787,525432,200582,TL254005,1980-01-01,,"Hertsmere, unparished area",105,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2NE,Yes,51.689305,-0.187075,525414,200505,TL254005,1980-01-01,,"Hertsmere, unparished area",107,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2NF,Yes,51.690767,-0.186828,525427,200668,TL254006,1980-01-01,,"Hertsmere, unparished area",103,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2NG,Yes,51.689261,-0.185398,525530,200503,TL255005,1980-01-01,,"Hertsmere, unparished area",104,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2NH,Yes,51.687915,-0.186754,525440,200351,TL254003,1980-01-01,,"Hertsmere, unparished area",114,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2NJ,Yes,51.688891,-0.186426,525460,200461,TL254004,1980-01-01,,"Hertsmere, unparished area",108,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2NL,Yes,51.692038,-0.188152,525332,200808,TL253008,1980-01-01,,"Hertsmere, unparished area",106,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2NN,Yes,51.692926,-0.189780,525217,200903,TL252009,1980-01-01,,"Hertsmere, unparished area",105,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2NQ,Yes,51.688296,-0.186912,525428,200394,TL254003,1980-01-01,,"Hertsmere, unparished area",112,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2NS,No,51.693023,-0.191441,525102,200911,TL251009,1992-01-01,1998-12-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2NW,Yes,51.693520,-0.191565,525092,200966,TL250009,1980-01-01,,"Hertsmere, unparished area",101,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2NY,Yes,51.692689,-0.183771,525633,200887,TL256008,1980-01-01,,"Hertsmere, unparished area",118,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2NZ,Yes,51.692550,-0.182358,525731,200874,TL257008,1980-01-01,,"Hertsmere, unparished area",120,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PA,Yes,51.692239,-0.179665,525918,200844,TL259008,1980-01-01,,"Hertsmere, unparished area",124,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PH,Yes,51.691614,-0.181716,525778,200771,TL257007,1980-01-01,,"Hertsmere, unparished area",115,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PJ,Yes,51.691268,-0.182569,525720,200731,TL257007,1980-01-01,,"Hertsmere, unparished area",112,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PL,Yes,51.690964,-0.181525,525793,200699,TL257006,1980-01-01,,"Hertsmere, unparished area",112,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PN,Yes,51.690138,-0.181601,525790,200607,TL257006,1980-01-01,,"Hertsmere, unparished area",110,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PP,Yes,51.690628,-0.182508,525726,200660,TL257006,1980-01-01,,"Hertsmere, unparished area",109,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PQ,Yes,51.692241,-0.181546,525788,200841,TL257008,1980-01-01,,"Hertsmere, unparished area",120,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PR,Yes,51.691246,-0.184089,525615,200726,TL256007,1980-01-01,,"Hertsmere, unparished area",109,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PS,Yes,51.691511,-0.183760,525637,200756,TL256007,1980-01-01,,"Hertsmere, unparished area",111,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PT,Yes,51.691697,-0.182986,525690,200778,TL256007,1980-01-01,,"Hertsmere, unparished area",113,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PU,Yes,51.692044,-0.183305,525667,200817,TL256008,1980-01-01,,"Hertsmere, unparished area",115,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PW,Yes,51.689780,-0.182860,525704,200565,TL257005,1980-01-01,,"Hertsmere, unparished area",107,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PX,Yes,51.692268,-0.182702,525708,200842,TL257008,1980-01-01,,"Hertsmere, unparished area",117,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PY,Yes,51.692231,-0.183818,525631,200836,TL256008,1980-01-01,,"Hertsmere, unparished area",115,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2PZ,Yes,51.690978,-0.184186,525609,200696,TL256006,1980-01-01,,"Hertsmere, unparished area",107,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QA,Yes,51.691858,-0.184122,525611,200794,TL256007,1980-01-01,,"Hertsmere, unparished area",113,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QB,Yes,51.692018,-0.184564,525580,200811,TL255008,1980-01-01,,"Hertsmere, unparished area",113,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QD,Yes,51.689149,-0.182191,525752,200496,TL257004,1980-01-01,,"Hertsmere, unparished area",107,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2QE,Yes,51.689248,-0.181073,525829,200509,TL258005,1980-01-01,,"Hertsmere, unparished area",109,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QF,Yes,51.688956,-0.179638,525929,200479,TL259004,1980-01-01,,"Hertsmere, unparished area",111,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QG,Yes,51.688633,-0.180244,525888,200442,TL258004,1980-01-01,,"Hertsmere, unparished area",109,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2QH,Yes,51.690075,-0.179839,525912,200604,TL259006,1980-01-01,,"Hertsmere, unparished area",113,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QJ,Yes,51.690704,-0.180407,525871,200672,TL258006,1980-01-01,,"Hertsmere, unparished area",114,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QL,Yes,51.691755,-0.179786,525911,200790,TL259007,1980-01-01,,"Hertsmere, unparished area",120,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QN,No,51.691016,-0.184286,525602,200700,TL256007,1987-04-01,1990-12-01,"Hertsmere, unparished area",107,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QP,No,51.693023,-0.191441,525102,200911,TL251009,1995-12-01,1998-06-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2QQ,Yes,51.689353,-0.179680,525925,200523,TL259005,1980-01-01,,"Hertsmere, unparished area",111,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QR,No,51.690948,-0.179948,525902,200700,TL259007,1980-01-01,1990-12-01,"Hertsmere, unparished area",116,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QX,Yes,51.691673,-0.179109,525958,200782,TL259007,1980-01-01,,"Hertsmere, unparished area",121,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QY,Yes,51.690346,-0.179365,525944,200634,TL259006,1980-01-01,,"Hertsmere, unparished area",115,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2QZ,No,51.690050,-0.179984,525902,200600,TL259006,1980-01-01,1990-12-01,"Hertsmere, unparished area",113,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2RE,Yes,51.689652,-0.179234,525955,200558,TL259005,1980-01-01,,"Hertsmere, unparished area",113,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C EN6 2RN,Yes,51.688546,-0.178699,525995,200435,TL259004,1980-01-01,,"Hertsmere, unparished area",112,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2RP,Yes,51.687942,-0.177450,526083,200370,TL260003,1980-01-01,,"Hertsmere, unparished area",116,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2RQ,No,51.688208,-0.177165,526102,200400,TL261004,1981-06-01,1990-12-01,"Hertsmere, unparished area",116,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2RR,Yes,51.688284,-0.175715,526202,200411,TL262004,1980-01-01,,"Hertsmere, unparished area",120,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2RT,Yes,51.687579,-0.173776,526338,200336,TL263003,1980-01-01,,"Hertsmere, unparished area",123,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2RU,Yes,51.687779,-0.174476,526289,200357,TL262003,1980-01-01,,"Hertsmere, unparished area",122,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2RX,Yes,51.687925,-0.175787,526198,200371,TL261003,1980-01-01,,"Hertsmere, unparished area",120,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2RY,Yes,51.687188,-0.177495,526082,200286,TL260002,1999-12-01,,"Hertsmere, unparished area",117,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2RZ,Yes,51.685911,-0.177532,526083,200144,TL260001,1980-01-01,,"Hertsmere, unparished area",119,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2SA,Yes,51.686976,-0.176621,526143,200264,TL261002,1980-01-01,,"Hertsmere, unparished area",120,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2SB,No,51.686410,-0.177237,526102,200200,TL261002,1991-09-01,1992-12-01,"Hertsmere, unparished area",119,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2SE,Yes,51.686136,-0.178666,526004,200167,TL260001,1980-01-01,,"Hertsmere, unparished area",116,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2SG,Yes,51.685372,-0.178118,526044,200083,TL260000,1980-01-01,,"Hertsmere, unparished area",119,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2SH,Yes,51.685401,-0.179433,525953,200084,TL259000,1980-01-01,,"Hertsmere, unparished area",116,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2SJ,Yes,51.684120,-0.181509,525813,199938,TQ258999,1980-01-01,,"Hertsmere, unparished area",119,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2SL,No,51.685556,-0.180164,525902,200100,TL259001,1991-09-01,1995-07-01,"Hertsmere, unparished area",114,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023575,Hertsmere 003E,E01023575,Hertsmere 003E EN6 2SP,Yes,51.690318,-0.200909,524455,200594,TL244005,1995-01-01,,"Hertsmere, unparished area",112,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023569,Hertsmere 002C,E01023569,Hertsmere 002C EN6 2SW,Yes,51.690029,-0.196682,524748,200570,TL247005,1994-12-01,,"Hertsmere, unparished area",106,England,2025-09-17,Within the building of the matched address closest to the postcode mean,E01023576,Hertsmere 001A,E01023576,Hertsmere 001A EN6 2TE,No,51.692958,-0.191255,525115,200905,TL251009,1995-07-01,1997-12-01,"Hertsmere, unparished area",103,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2WZ,No,51.692958,-0.191255,525115,200905,TL251009,1997-12-01,1998-06-01,"Hertsmere, unparished area",103,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZD,No,51.693023,-0.191441,525102,200911,TL251009,1998-06-01,2000-06-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZE,No,51.693023,-0.191441,525102,200911,TL251009,1998-06-01,1999-06-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZF,No,51.693023,-0.191441,525102,200911,TL251009,1998-06-01,2000-06-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZJ,No,51.693023,-0.191441,525102,200911,TL251009,1999-06-01,2001-01-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZN,No,51.693023,-0.191441,525102,200911,TL251009,1999-06-01,2001-07-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZP,No,51.693023,-0.191441,525102,200911,TL251009,1999-06-01,2001-01-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZQ,No,51.693023,-0.191441,525102,200911,TL251009,1999-12-01,2001-01-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZR,No,51.693023,-0.191441,525102,200911,TL251009,1999-12-01,2001-07-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZS,No,51.693023,-0.191441,525102,200911,TL251009,1999-12-01,2001-01-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZX,No,51.693023,-0.191441,525102,200911,TL251009,1999-12-01,2001-04-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 2ZY,No,51.693023,-0.191441,525102,200911,TL251009,1999-12-01,2000-09-01,"Hertsmere, unparished area",102,England,2025-09-17,Postcode sector mean (mainly PO Boxes),E01023577,Hertsmere 001B,E01023577,Hertsmere 001B EN6 5JB,No,51.691847,-0.179912,525902,200800,TL259008,1985-04-01,1990-12-01,"Hertsmere, unparished area",121,England,2025-09-17,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023573,Hertsmere 003C,E01023573,Hertsmere 003C