hatters - I think we're talking different eras here. When I was at Sywell in 73/74 Sloanes had bought up a number of ex-RN Hiller 12E's and were involved in crop spraying. I think Peter Boitel-Gill was Chief Pilot. David Dixon came along much later - the R22 wasn't in production until until 1979.
I'm aware I'm guilty of perpetuating thead drift so my apologies. Thoroughly enjoying the Luton thread - my only involvement there was with McAlpines when I used to fly in with Mohamed Al-Fayed in the late 70's so he could jet off somewhere.