I don't think anyone has mentioned GBBTV, Jet Ranger operated by YTV; GASRV, Beech Baron operated by British Ropes, GATZN HS125,operated by the Rank Organisation, a couple of C337s operated by Cowick Hall Aviation, , a Heron GAOTI [?] operated by Robinson Holdings, a C401 GAZFR oerated by Smith Johnson & Nephews and apache GAPZE operated by the AA. There must be many more!!