I'm all for national security. Twice in many years have the police (or anybody) asked for details about a flight outside of controlled airspace. Both in Scotland strangely. Once on a remote island with only one policeman on it. Appeared within 10 mins of landing and asked politely for details. Information provided, he went away happy and I'm sure never called the CAA/ Scottish Information/ local FISO who knew about the flight/ anybody else, because the answers passed the reasonableness test. The other time was an airport where the locals were able to say 'och whist, he's been coming here for years Jock'. Same result.
Actually it was quite reassuring that people cared enough to check that I was not a rag-head with a chemical bomb on board.
The olympics would be just the sort of situation the bad guys would like to make something of. Let's not give them the chance.
h-r
Incidently, I've always found Preston to be a very dodgy place. Wrong side of the Pennines.