Dennis
All off-airfield based aircraft to be positioned to an airfield for the period.
I admire your pragmatism and I have no doubt that there must be a better way to satisfy the Governments's requirements without the current preposterous proposals! However, since the police force has difficulty resourcing local football matches, I don't think it would be possible to man every GA airfield in the country; neither will owners want their precious babies taken out of their humidity controlled hangars and dumped in a field, probably miles away, for two months...
Howsabout this though? In the same way that we're all given unique identifiers for interweb banking, why couldn't we each apply for a similar unique 'Olympics code' ahead of the games. There's plenty of time to vet the individual applicants and then we simply announce ourselves to a dedicated 'Olympics' frequency on lifting? That would provide a much higher level of security than the FP idea, but with a lot less hassle and a lot more spontaneity