Hmm. Maybe it's just the effects of compression from the telephoto lens used. The guy in the center of the group is wearing a flying suit, so I guess a member of the club, and the guy on the right might be my big bro !
The events at Breighton are for members and guests only, not 'air shows' as such open to the general public, so anyone on the 'live' side will either be a pilot or an 'official' of some sort. Also, as the Buchon was departing, I'd guess this wasn't actually part of a show.
Looking at the pic again, the aircraft must be quite some distance past the three blokes standing out there, with the aforementioned compression effect altering things. I still have some slight doubts though, even though it was a genuine low pass, but it's still a great shot.