Gwynedd

The twin engine aircraft left RAF Llandwrog located near Caernarfon at 0124LT on a night training exercise to RAF Penrhos. The crew contacted ground at 0132LT and this was the last radio contact ever. It seems the aircraft crashed into the sea while approaching RAF Penrhos as no trace of the aircraft nor the crew was ever found.
Crew (9th AFU):
Sgt Trevor Morgan Blakemore, pilot,
P/O Keith Charman, navigator,
Sgt John George Cairns,
Sgt John Mallett,
LAC Ronald Adam Simpson.

The airplane departed RAF Moreton-in-Marsh on a training mission on behalf of the 21st OTU. While cruising at low altitude in poor weather conditions, the twin engine airplane impacted the east slope of Mt Foel-fras, in the Snowdonia, north of Wales. Three crew members were injured while the observer was killed.
Crew:
Sgt Thomas Crilly, observer, †
Sgt C. Symmonds,
Sgt L. Cooper,
Sgt D. Stokes.

The airplane departed RAF East Wretham on a cross country flight. Over Wales, the crew encountered poor weather conditions. While descending into clouds, the airplane impacted hilly terrain near Llanymawddwy. All six crew members were killed.
Crew:
Sgt Aldis Keda,
P/O Jan Stefek,
Sgt Rudolf Grimm,
Sgt Jindrich Horinek,
F/Sgt Jan Stanovsky,
Sgt Rudolf Vokurka.

The airplane departed RAF Oakington at 1911LT on March 25 on an operation to Saint-Nazaire. While returning to base the following night, it ran shot of fuel and ditched at 0200Lt in the Barmouth Bay off Barmouth, Gwynedd. At the time of the accident the bomber was many miles west of track and shortly before going into the sea, four crew members bailed out. By good fortune, no one was hurt. The Stirling was later salvaged and taken to RAF Llanbedr.
Crew:
S/L H. L. Legh-Smith,
Sgt Bird,
Sgt Fenton,
Sgt Cooper,
Sgt Bentham,
Sgt Williams,
Sgt Hudson.

The crew departed RAF Stormy Down on a delivery flight. One of the engine failed in flight, emitting thick black smoke. The pilot made a belly landing in hilly terrain in Twynau Gwynion. All four crew members escaped uninjured and the airplane was damaged beyond repair.

The airplane was engaged in a local training exercise at RAF Llandwrog. On approach, it collided with a second RAF Whitley registered K9041 and carrying a crew of seven. Following the collision, both airplane dove into the ground and crashed near the airfield. All 16 crew members in both airplanes were killed.
Crew:
S/L Herbert Victor Barker, pilot,
Cpl Edwin Marcus Harding,
LAC David Noel Pearman Roger, air gunner,
LAC Ronald William Seymour, air gunner,
LAC Joseph Cromwell Smith, air gunner,
LAC William Arthur Smith-Cross, air gunner,
LAC John William Stoneham, air gunner,
LAC Charles William Stubberfield, air gunner,
LAC Bert William Tucker, air gunner.

The airplane was engaged in a local training exercise at RAF Llandwrog. On approach, it collided with a second RAF Whitley registered K7252 and carrying a crew of nine. Following the collision, both airplane dove into the ground and crashed near the airfield. All 16 crew members in both airplanes were killed.
Crew:
F/Lt Evelyn John Bentick Martin, pilot,
Sgt Charles Cullen, wireless operator,
LAC Thomas Albert Pryce,
LAC John Pollock, air gunner,
Cpl Peter Edward Purdy, air gunner,
LAC Henry William Rigley, air gunner,
LAC Raymond Bryan Roffe, air gunner.

The airplane departed RAF Valley at 1130LT on a flight to RAF West Freugh, carrying three crew members. During the takeoff run, the pilot-in-command aborted the procedure but was unable to stop the airplane within the available distance. The Botha overran and crashed into the sea about 500 metres off Rhosneigr. All three crew members were killed. It is also reported that 11 rescuers died while they were trying to save the crew.
Crew:
Sgt Kazimierz Stefan Rosiewicz,
LAC Thomas Alexander Dixon,
LAC Freferick Charles Glockler.

The crew departed RAF Moreton-in-Marsh on a cross country navigation exercise and their route was out over mid Wales to the Irish Sea and back to RAF Moreton-in-Marsh, a fairly straight forward flight. During the briefings all crews were instructed NOT to drop through cloud without first confirmation of their location and the terrain below! Being told by using black humor of how over Wales, the clouds have hard centre. Unfortunately unknown to the crew, due to cloud and an unexpected shift in wind direction and speed, they veered off course, then at the allotted time en route they saw a wide water feature about three miles off to port, which they mistook the River Dovey for the coast. No sooner had they glimpsed the water and before realizing it wasn’t the sea, they entered cloud. But sadly, confident the water they saw, along with the timing the Wellington flew on gradually losing height to the pre-arranged height over water of 1000ft, ahead lay the high mountain of Ffridd Rhosfach at around 1,448 feet. The airplane was destroyed and all six crew members were killed.
Crew:
Sgt James Francis Paul Stuart, pilot,
Sgt Herbert George Mole, pilot,
P/O George Joyce Matthews, observer,
Sgt Allan Jackets, wireless operator,
Sgt John Francis Moore, wireless operator,
Sgt George Hewison, air gunner.

The airplane departed RAF Newton at 1810LT on an operation to Lorient. While returning to base in the late evening, the crew got lost. While flying in clouds, the airplane impacted the slope of Mt Moel Farlwyd (577 metres high) and disintegrated in impact. Five crew members were killed and a sixth was injured.
Crew:
P/O Charles Hamerton Elliott, pilot, †
P/O Roland Clive Parkhurst, pilot, †
Sgt Harold Beddall, observer, †
Sgt Lewis John Kirk, wireless operator, †
Sgt John Killen, wireless operator, †
Sgt P. Martlew, air gunner.