His name appears in the Killed in Action list in Flight magazine archvies dated 1 June 1944.
His death is registered in Totnes district and in the same page of the death register is listed 23 yr old John J Yeates, whose name appears also in the killed in action list and is lsited by CWGC as a WOP/AG.
The next page of the death regster contains
Alfred G Beeston WOP/AG, William McL Jack (Nav/bom), so that looks like
The list of Killed in action from that magazine are:
KILLED IN ACTION.—Sgt. A. G. Beeston; F>,,.
Lt. A. L. B. Bent; P/O. F. J. Cooke; P/O. Coster; L.A/C. E. Eliav; F/O. P. Harrison; Sgt. W. McL. Jack; Fit. Sgt. J. G. Jones; E. A, Knight; Sgt. J. J. Yeates.
http://www.flightglobal.com/pdfarchi...0-%201138.html
http://www.freebmd.org.uk/cgi/search.pl
So, a likely aircraft loss with at least Four men on board, the classification being KIA rather than killed on Active service suggets to me it was a unit of Flight status rather than a squadron or maybe a training unit. Would that match a Boston unit or a Mitchell?
Cooke (Pilot)
Yeates (Nav/bom)
Beeston (WOP/AG)
Jack (WOP/AG)