If the TV Licence and post code databases are anything to go by ...
About 30 years ago the house we live in was split into 2 tenancies, 1 called "The Flat", the other "The Cottage". About 20 years ago the new owner re-combined the two into one dwelling, called "The Cottage". When we moved in 10 years ago we bought a TV licence for "The Cottage", but started getting letters addressed to "The Flat" about not having a licence. Eventually I managed to convince TVLA that "The Flat" hadn't existed for at least 10 years and the letters stopped. Meanwhile, we changed the name of the house. The post code database admins happily removed the old name, but have since failed to add the new one, despite being told by the local authority that they approved the change. Now anyone looking up our postcode can't find the address and the last TV Licence renewal came addressed to "The Flat". So I'm not expecting much from an ID database.