http://www.ffa.org.uk/documents/CAP428.pdf
CAP 428
Safety Standards at Unlicensed Aerodromes
(Including Helicopter Landing Sites)
2 Provide a movements log and ensure pilots always complete it. The local police and Customs and Excise will wish to check on flights in and out as may your local planning department if you are operating under the 28-day rule - Chapter 2, Paragraph 2.2 refers.
ShyTq
There is no legal requirement / mandate for anyone visiting a hotel to give correct personal details to a member of hotel staff i.e. there's no such offence of "giving false details to a hotel receptionist"!
I guess it would be like booking into a hotel as Mr Smith (as long as your name isn't Smith). Give all the false info you like, but the credit card will give your game away to the missus, as would the aircraft registration to the authorities.
What were those words, 'Im not doing anything dodgy' !!!!