Sometimes it's useful to generate a bunch of addresses as test data for an application. This page will do that for you, if you're interested in English and Welsh addresses at least. How useful this will be to you depends on what you're trying to test. The addresses are from the Land Registry data, so will be reasonably consistent, whilst addresses entered by real users are unlikely to be.
To generate your addresses, enter the number of addresses required, press the button and then wait for a while