The Cockleshell Heroes

The Cockleshell Heroes movie poster.

Movie (1955)

Starring:
José Ferrer (Major Geoffrey Stringer)
Trevor Howard (Captain Hugh Thompson)
Dora Bryan (Myrtle)
Christopher Lee (Lieutenant-Commander Greaves)
Victor Maddern (Marine Sgt. Craig)
Anthony Newley (Marine Clarke)

During World War II, German ships are "safely" docked upriver at Bordeaux, but the British send a team of kayakers to attack them.

Vickers Valetta C1

The best choice in recognition, though the tail fin from these views seems not matching exactly (too squarred).
Probably from the RAF, a roundel seems at the right position on the fuselage behind the wings.