What caused the death of and/or what were the places of death registration for the undermentioned airmen all killed on active service:

AC1 Alexander B.D. BOYLAN - 966290 - 1 BC, 902 Balloon Sqn, Kidbrooke, London (was target of the Luftwaffe 17/18 Oct);
AC1 Reginald J.M. FOSTER - 819119 - 615 Sqn - Northolt, Middlesex);
AC2 Aubrey L. MAYO - 819009 - 615 Sqn;
AC1 Sidney T. NICHOLLS - 819104 - 615 Sqn;
AC2 Edward MOORE - 1117995, and
AC2 Alec A.SUMMERFIELD - 819151 - 615 Sqn.

Anson K6155 of 2 SAN crashed in forced landing near Ludlow, Shropshire.

Regards and thanks for your help.
Henk.