I hope no-one will mind my intrusion into the forum, but I have the 1943 edition of Bomber Command Losses.
There is one loss by 75 Sqn recorded for the night of 3rd/4th March. The aircraft was Stirling I, N6123, coded AA-Q.
Take-off was at 2003 from Newmarket to lay mines off The Frisian Islands.
The crew were all lost without trace and are commemorated on the Runnymede Memorial:
Sgt. R.C. Going, R.N.Z.A.F.
Sgt E.H. Weaver,
P/O A.M. Bridgman, R.N.Z.A.F.
F/S FAW Willis,
Sgt KC Eyre,
Sgt FB Stewart,
Sgt CS Burton, R.N.Z.A.F.
Hope this helps?
May I also recommend this site:
http://www.rafcommands.com/
The message board is frequented by extremely friendly and helpful researchers with far greater info available to them than I have.