That is brilliant. Thank god for the FOI request that bought it into the light.
Telling tales I suppose, but back in '72 when a 6th form student, for the Easter hols I got a temporary job for a fortnight at the Tax Office in Bootle as a clerical assistant.
It was all manual stuff back then, hardly any computers, so there were hundreds of filing cabinets lettered from a-z holding folders for the people in the tax district that the section I was working for handled. Yes, unbelievably, there was a folder for a Mr Kunt in there. Much mirth....