Vickers 456 Warwick I

The crew was performing a radio navigation exercise out from RAF Thornaby. While approaching Dinsdale at an altitude of 500 feet, the aircraft was 'attacked' by the pilots of two RAF Hurricanes that were conducting an unauthorized practice interception of the bomber. To evade the 'attack', the pilot of the Warwick attempted a steep climb when he lost control of the aircraft that dove into the ground and crashed in a field. All six crew members were killed.
Crew (279th Squadron):
F/L Harvey Luck, pilot,
F/L Ronald Cooper, navigator.
F/O Desmond Holland, wireless operator and air gunner,
F/O Frederick Ritchie, wireless operator and air gunner,
F/O Robert Woolfield, wireless operator and air gunner,
Sgt James Wiles, air gunner.
Source: http://aviation-safety.net/wikibase/wiki.php?id=161987

The crew left RAF Thornaby at 1640LT to perform an ASR mission off the Dutch coast. As no crew was assisted or evacuated on the North Sea, the crew decided to return to RAF Thornaby and while approaching the British coast, he encountered poor weather conditions with thunderstorm activity. While a second Warwick was able to continue its route, BV336 was maybe struck by lightning or suffered turbulence, went out of control and dove into the ground before crashing in a field. All six crew members were killed.
Crew (280th Squadron):
S/L Edgar Andrew Good, pilot,
F/O Willis Wylie Coons, navigator,
F/O Dennis Maurice Stewart, wireless operator and air gunner,
F/Sgt William Vernon Crockett, wireless operator and air gunner,
F/Sgt Douglas Allan Payton, wireless operator and air gunner,
W/O Henry George Richardson, air gunner.