Cardiganshire

The crew left RAF Brawdy in the evening on an experimental night radar meteorological research flight. Aircraft was due to overfly a marker dropped into the sea taking readings at 100 feet intervals up to 1,500 feet using a radar altimeter to secure accuracy. At 0200LT, while descending to 200 feet, the aircraft impacted the sea. No recovery of bodies or wreckage proved possible. Aircraft and crew were from the RAF Radar Meteorological Flight based at Defford, but detached to Brawdy for this particular sortie.
Crew:
F/Lt Daniel Joseph Cotter, pilot,
F/Sgt Arthur Edward Bedwell, navigator,
W/O Edward Moore, observer.
Source:
http://www.thunder-and-lightnings.co.uk/memorial/entry.php?id=164

The airplane was completing a training sortie from RAF Upper Heyford with a crew of four on board. En route, the crew encountered technical problems with the right engine after the propeller and reduction gear sheared off. The pilot-in-command lost control of the airplane that crashed near Aberaeron. Two crew members were killed.
Crew:
P/O John Alexander Douglas Scroggie, pilot, †
Sgt Reginald Frederick Arthur Young, observer, †
Sgt J. Bremmer,
Sgt Hart.

While on a training exercise, the airplane suffered an engine failure and crashed in hilly terrain in Glasffrwd. Three crew members were killed and four others were injured.
Crew:
P/O George Bewick Bainbridge, pilot, †
Sgt Robert Gerald Cosgrave, pilot, †
F/Sgt William Powell, wireless operator, †
Sgt W. Breeze,
Sgt M. Scott,
Sgt J. A. Sellars,
Sgt H. G. Ford.

The airplane departed RAF Waddington on a raid over enemy positions. While returning to its base, it crashed in unclear circumstances into the Cardigan Bay off Aberystwyth. Two crew members were rescued and two others were killed.
Crew:
Sgt Edward Deryck Farmer, pilot, †
Sgt R. D. Hobbs,
Sgt D. W. Seagar,
Sgt Cyril Edward Thomas Wood, wireless operator. †

The aircraft crashed in unknown circumstances and was damaged beyond repair. The pilot, sole on board, was rescued.