Many thanks Gordon I am now sure that Bill Crawford Compton was in B Flight not A Flight.
However I think the details about both flights are a bit confused. Strang was not promoted to Flight Lieutenant until 18 October when I think he replaced Stan Norris who had arrived at the squadron in July (not August as I stated). Strang led the flight until lost in a flying accident in January 1942 when Crawford Compton succeeded him.
https://www.facebook.com/pg/485nzraf...94866470698320
This site does however wrongly identify Basil Collyns as a flight commander in 485 Squadron rather than Norris.
Reg Grant had only just been commissioned in August and did not become a flight commander until March 1942. Graham Howe Francis must have been flight commander from Wells being promoted in November 1941 until Grant succeeded him in March. On 13 March 1942 Francis became an instructor at Hawarden.
best regards
Keith