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

LAC Fred ALCOCK - 743201 - killed on active service;
AC1 Eric J. CLATWORTHY - 615303 - 266 Sqn (Wittering, Northamptonshire) - not found Flight archives;
LAC Valentine DAVIDSON - 269024 - 15 BC, 937 Balloon Sqn, South Tyne - killed on active service;
LAC John J. HOLLAND - 840423 - 1 BC, 901 Balloon Sqn, Abbeywood, London - killed on active service;
AC2 John MANSELL - 1281966 - killed on active service, and
LAC Frederick G. WESTLAKE - 157638 - killed on active service.

Proposed aircraft losses for this day:

Blenheim IV - Z5975 - 4 FPP - crashed on landing Sarclet, 6 miles S of Wick, Caithness
Magister I - L8224 - 5 EFTS - crashed on take-off, Stone, Staffordshire
Magister I - P2430 - 16 EFTS - flew into ground Ashbourne.

Regards and thanks for your help.
Henk.