"The Tiger Moth Story" contains some pics of three Tigers converted by Crewdson's company "Film Aviation Sericves" at Croydon in the 50s. Two were disguised to look like Rumpler C.IVs for the film "Lawrence of Arabia" and the third to a very convincing Fokker DVII replica for a film for which it wasn't needed. There is some text about him and his involvement in "The War Lover".
Incidently, not that long ago a pic appeared on PPRuNe, WIX or the Flypast forum of Crewdson beating up Bovingdon in one of the B-17s - lower than Bullock I'd say!