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
SG16 6GU,Yes,52.000472,-0.298733,516888,234925,TL168349,2021-03-01,,Ickleford,48,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG16 6GW,Yes,52.001343,-0.296806,517018,235025,TL170350,2021-11-01,,Ickleford,47,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG16 6GX,Yes,52.000271,-0.296686,517029,234906,TL170349,2021-08-01,,Ickleford,49,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG16 6GY,Yes,52.000114,-0.297610,516966,234887,TL169348,2021-03-01,,Ickleford,49,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3AW,Yes,51.973410,-0.276126,518511,231952,TL185319,2010-10-01,,Ickleford,52,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3DW,Yes,51.970151,-0.280767,518201,231582,TL182315,2019-06-01,,Ickleford,56,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3FH,Yes,51.969051,-0.278713,518345,231463,TL183314,1997-12-01,,Ickleford,54,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3FN,Yes,51.985169,-0.298191,516965,233224,TL169332,2021-03-01,,Holwell,60,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3RN,Yes,51.966641,-0.288587,517673,231179,TL176311,1980-01-01,,Ickleford,64,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3RP,Yes,51.963258,-0.296475,517140,230790,TL171307,1980-01-01,,Ickleford,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3RR,Yes,51.970817,-0.287566,517732,231645,TL177316,1980-01-01,,Ickleford,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3RS,Yes,51.979717,-0.289952,517545,232631,TL175326,1980-01-01,,Ickleford,59,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3RT,Yes,51.978783,-0.291211,517461,232525,TL174325,1980-01-01,,Holwell,59,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3RU,Yes,51.990171,-0.284119,517918,233803,TL179338,1980-01-01,,Ickleford,52,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3RW,No,51.971318,-0.288013,517700,231700,TL177317,1980-01-01,1986-12-01,Ickleford,61,England,2024-03-02,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3RX,Yes,51.994030,-0.294753,517178,234215,TL171342,1980-01-01,,Holwell,50,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SA,No,51.999282,-0.294230,517200,234800,TL172347,1980-01-01,1991-12-01,Ickleford,49,England,2024-03-02,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SB,Yes,52.000089,-0.295266,517127,234888,TL171348,1980-01-01,,Ickleford,48,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SG,Yes,51.985802,-0.297815,516989,233295,TL169332,1980-01-01,,Holwell,60,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SH,Yes,51.984793,-0.299601,516869,233180,TL168331,1980-01-01,,Holwell,61,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SJ,Yes,51.985967,-0.303637,516589,233304,TL165333,2012-12-01,,Holwell,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SL,Yes,51.985876,-0.301089,516764,233298,TL167332,1980-01-01,,Holwell,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SN,Yes,51.986920,-0.304283,516542,233409,TL165334,1980-01-01,,Holwell,59,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SP,Yes,51.984941,-0.304824,516510,233188,TL165331,1980-01-01,,Holwell,63,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SQ,Yes,51.986436,-0.301913,516706,233359,TL167333,1980-01-01,,Holwell,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SR,Yes,51.985739,-0.305318,516474,233276,TL164332,1980-01-01,,Holwell,61,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SS,Yes,51.983152,-0.305461,516471,232988,TL164329,1980-01-01,,Holwell,64,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3ST,Yes,51.981457,-0.309515,516197,232793,TL161327,1980-01-01,,Holwell,57,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SU,Yes,51.981849,-0.310532,516126,232835,TL161328,1980-01-01,,Holwell,55,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SW,Yes,51.985579,-0.304217,516550,233260,TL165332,1991-01-01,,Holwell,63,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3SZ,Yes,51.986349,-0.303302,516611,233347,TL166333,1980-01-01,,Holwell,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TD,Yes,51.971524,-0.276883,518464,231741,TL184317,1980-01-01,,Ickleford,53,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TE,Yes,51.971138,-0.277553,518419,231697,TL184316,1980-01-01,,Ickleford,52,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TG,Yes,51.972498,-0.277678,518407,231848,TL184318,1980-01-01,,Ickleford,53,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TH,Yes,51.974662,-0.276226,518501,232091,TL185320,1980-01-01,,Ickleford,52,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TJ,Yes,51.976619,-0.276018,518510,232309,TL185323,1980-01-01,,Ickleford,51,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TL,Yes,51.976792,-0.275547,518542,232329,TL185323,1980-01-01,,Ickleford,50,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TN,Yes,51.977391,-0.276541,518472,232394,TL184323,1980-01-01,,Ickleford,50,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TP,Yes,51.977793,-0.277618,518397,232437,TL183324,1980-01-01,,Ickleford,50,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TQ,Yes,51.972146,-0.276992,518455,231810,TL184318,1980-01-01,,Ickleford,52,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TR,Yes,51.978521,-0.278187,518356,232517,TL183325,1980-01-01,,Ickleford,50,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TS,Yes,51.977891,-0.281254,518147,232442,TL181324,1980-01-01,,Ickleford,51,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TT,Yes,51.978339,-0.276199,518493,232500,TL184325,1980-01-01,,Ickleford,50,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TU,Yes,51.980451,-0.276105,518494,232735,TL184327,1980-01-01,,Ickleford,47,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TW,Yes,51.978243,-0.273931,518649,232493,TL186324,1980-01-01,,Ickleford,49,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TX,No,51.982852,-0.277380,518400,233000,TL183330,1980-01-01,1998-06-01,Ickleford,50,England,2024-03-02,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3TZ,Yes,51.976835,-0.271789,518800,232340,TL187323,1980-01-01,,Ickleford,51,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UA,Yes,51.976817,-0.270521,518887,232340,TL188323,1980-01-01,,Ickleford,51,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UB,Yes,51.974244,-0.275368,518561,232046,TL185320,1980-01-01,,Ickleford,51,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UD,Yes,51.972845,-0.276191,518508,231889,TL185318,1980-01-01,,Ickleford,52,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UE,Yes,51.973113,-0.276737,518470,231918,TL184319,1980-01-01,,Ickleford,52,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UF,Yes,51.973204,-0.277968,518385,231926,TL183319,1980-01-01,,Ickleford,53,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UG,No,51.970292,-0.279318,518300,231600,TL182316,1991-01-01,1992-12-01,Ickleford,54,England,2024-03-02,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UH,No,51.967617,-0.280876,518200,231300,TL181312,1993-08-01,1995-12-01,Ickleford,56,England,2024-03-02,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UN,Yes,51.968163,-0.280057,518255,231362,TL182313,1980-01-01,,Ickleford,55,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UP,Yes,51.968470,-0.278356,518371,231399,TL183313,1980-01-01,,Ickleford,54,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UR,Yes,51.968973,-0.280128,518248,231452,TL182314,1980-01-01,,Ickleford,56,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UT,Yes,51.969304,-0.280057,518252,231489,TL182314,1980-01-01,,Ickleford,56,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UU,Yes,51.969792,-0.279601,518282,231544,TL182315,1980-01-01,,Ickleford,55,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UX,Yes,51.970137,-0.280432,518224,231581,TL182315,1980-01-01,,Ickleford,55,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3UZ,Yes,51.969366,-0.280549,518218,231495,TL182314,1980-01-01,,Ickleford,58,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XA,Yes,51.969775,-0.280854,518196,231540,TL181315,1980-01-01,,Ickleford,57,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XB,Yes,51.969080,-0.282555,518081,231460,TL180314,1980-01-01,,Ickleford,59,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XD,Yes,51.967145,-0.285468,517886,231240,TL178312,1980-01-01,,Ickleford,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XE,Yes,51.967136,-0.285494,517884,231239,TL178312,1980-01-01,,Ickleford,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XF,No,51.965905,-0.286764,517800,231100,TL177311,1982-03-01,1990-12-01,Ickleford,63,England,2024-03-02,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XG,Yes,51.965183,-0.286023,517853,231021,TL178310,1980-01-01,,Ickleford,61,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XH,Yes,51.968392,-0.287761,517725,231375,TL177313,1980-01-01,,Ickleford,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XJ,Yes,51.967896,-0.288292,517690,231319,TL176313,1980-01-01,,Ickleford,63,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XL,Yes,51.967440,-0.289110,517635,231267,TL176312,1980-01-01,,Ickleford,63,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XN,Yes,51.968313,-0.289744,517589,231363,TL175313,1980-01-01,,Ickleford,63,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XP,Yes,51.968005,-0.285272,517897,231336,TL178313,1980-01-01,,Ickleford,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XR,Yes,51.969499,-0.284169,517969,231504,TL179315,1980-01-01,,Ickleford,60,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XS,Yes,51.969279,-0.285706,517864,231477,TL178314,1980-01-01,,Ickleford,61,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XT,Yes,51.970134,-0.281452,518154,231579,TL181315,1980-01-01,,Ickleford,57,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XU,Yes,51.970029,-0.282897,518055,231565,TL180315,1980-01-01,,Ickleford,58,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XW,Yes,51.969937,-0.283963,517982,231553,TL179315,1990-07-01,,Ickleford,59,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XX,Yes,51.971146,-0.282403,518086,231690,TL180316,1980-01-01,,Ickleford,57,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XY,Yes,51.971112,-0.283785,517991,231684,TL179316,1980-01-01,,Ickleford,59,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3XZ,Yes,51.971888,-0.282692,518064,231772,TL180317,1980-01-01,,Ickleford,57,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3YA,Yes,51.971985,-0.281977,518113,231784,TL181317,1980-01-01,,Ickleford,55,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3YB,Yes,51.970970,-0.281434,518153,231672,TL181316,1980-01-01,,Ickleford,56,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3YD,Yes,51.971292,-0.280080,518245,231710,TL182317,1980-01-01,,Ickleford,55,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3YE,Yes,51.972217,-0.280003,518248,231813,TL182318,1980-01-01,,Ickleford,54,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3YF,Yes,51.971729,-0.279830,518261,231759,TL182317,1980-01-01,,Ickleford,54,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3YG,Yes,51.971622,-0.279254,518301,231748,TL183317,1980-01-01,,Ickleford,54,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3YH,Yes,51.971155,-0.280553,518213,231694,TL182316,1980-01-01,,Ickleford,56,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3YJ,Yes,51.970632,-0.280472,518220,231636,TL182316,1980-01-01,,Ickleford,56,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3YL,Yes,51.966974,-0.286100,517843,231220,TL178312,2019-03-01,,Ickleford,62,England,2024-03-02,Within the building of the matched address closest to the postcode mean,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A
SG5 3YQ,No,51.971191,-0.279283,518300,231700,TL183317,1980-01-01,1990-12-01,Ickleford,54,England,2024-03-02,Postcode terminated prior to Gridlink initiative - last known ONS postcode grid reference,E01023594,North Hertfordshire 014A,E01023594,North Hertfordshire 014A