From left to rigtht : Sgt. Rowthorne AF  - Sgt. Prettejones F/E (replaced on 11-12 May by Sgt. Witham)  - F/Sgt. Stuart RNZAF B/A  - P/O Watt RNZAF Pilot.
The remaining three are  Sgt. Grant AG - Sgt Amies W/OP - Sgt. Thompson NAV. We only don't know who who is.

This photo was taken at RAF Winthorpe 1661 HCE on Feb/March 1944

 Thanx to Wim Govaerts for this info and photo