There is a strange beast residing deep in the bowels of Nominet's headquarters in Oxford going by the name of "The Automaton". This curious creature devours PGP signed emails from Nominet member tag holders hoping to register their .xx.uk domain names on behalf of anxious clients.
When it deigns to accept the Member's request it fires back another email saying whether it has registered the domain or not. Usually this happens within minutes but I have waited up to 6 hours in one case for the beast to reply to me.
Come on Nominet, bring on realtime registrations!