Collection of comments taken from FB(WW2AircrashSite):
 May - June 1940, judging by the type of roundel and the black port wing.
Might be Dunkirk. Interesting hand painted roundel and black painted port wing to help in identification.
 Also looks like a fabric covered aileron indicating an early Mk1 Spit.

Spit wreck

British LTV “Fantails” or Buffalo amphibians transport German prisoners through a flooded landscape south of Comacchio, Northern Italy, 11 April 1945. The first of the two preliminary operations scheduled for each of the coastal flanks began on the night of 1 April when a flotilla of LTV's carrying the British 2d Commando Brigade set out across the Comacchio Lagoon's shallow waters on the Eighth Army's Adriatic flank. That operation was to be the first of a series of three designed to give the British forces advance positions from which to cover an amphibious right hook against Argenta.

LTV at Comacchio

On 28th August 1940 Churchill visited Dover, to see for himself the town that was under repeated air attack as well as shelling from the French coast.
'It was while we were at Dover, that we saw the approaching German bombers and just a short distance away they were met by British fighters. Mr Churchill seemed mesmerized as the air battle took place almost overhead. We saw maybe two German bombers crash into the sea and some fighters with smoke trailing from them as they spiraled away from the main dogfight.

Later that afternoon, we had to drive to Ramsgate and on the way we saw a smoldering aircraft in a field, and Churchill asked the driver to pull off the road and get as close to the wreckage as he could. There was firemen, soldiers and ARP men standing around and I walked with the Prime Minister towards the aircraft. Even though I warned Mr Churchill about the dangers of being out in the open during an air raid, he said that he must have a look, and when he saw the tangled mess he said ‘Dear God, I hope it isn’t a British plane.’ He was reassured that it was not.'

Inspector W.Thompson, Churchill’s bodyguard

