And SEPs aren't permitted over Central London, how do you account for the Reds, the BBMF etc. ?
Military aircraft, not subject to civvie rules.
To what extent can the rules be waived for agreeable applicants/proposals.
AFAIK, the CAA SRG will agree ANY Exemption request where it's do-able for a good reason (and you pay the relevant fee of course). I think you could probably check your flock on a farm without an exemption as Rule 5 doesnt take into consideration animals, but Persons, vehicles, vessels and structures do count.