And the bright yellow Cub (or similar) which did that on a very busy Sunday in the summer showed a commensurate lack of airmanship by doing so.
Farnborough needs class E airspace. That would make public transport operations safer, the probability of a mid-air collision over the local built-up areas less and permit the provision of SIDS and STARS.
Since it was a busy Sunday in summer, it is highly likely that the farnborough LARS frequency was saturated with calls from pilots who did not have any need to call and that pilot who probably should have called could not get a call in.
Regards,
DFC