What caused the death of and/or what were the places of death registration for:

Sgt (Pilot) Alexander G. DUNBAR - 968153 - killed on active service,
AC2 (FME) Charles M. GWYNN - 983903 - killed on active service,
P/O Arthur H. JAMES - 88733 - 20 Balloon Centre/950 Balloon Sqn, Lyness, Orkney - not listed Flight archives, and
LAC (Pilot u/t) Norman H. PULFORD - 937486 - killed on active service.

Proposed aircraft losses for this day:

Hind I - L7198 - 4 FPP - crashed in forced landing pres. at Neston, Wirral, Cheshire
Master I - N8001 - 8 FTS - broke up in air over Fordoun, Kincardineshire
Oxford I - N4637 - 11 FTS - collided near Shawbury
Oxford II - N4769 - 11 FTS - collided near Shawbury.

Regards and thanks for your help.
Henk.