treadigraph,
John Conner was the ex F-4 guy; also ex-Air Europe 737's if I recall.
Brian Lecomber's SV4B G-AYWT spent some time in the early 90's as the Daily/Sunday Express "duo"? & certainly John was flying it at that time. I'm fairly sure that John Harper was flying the Pitts G-IIII & Extra occasionally at that time although the majority of the 'Microlease' solo was by flown by Alan Wade.
Great thread !