It's a Bristol Beaufort, a twin-engined torpedo bomber, based on Blenheim experience (more heavy, because crew was four men). It was the standard torpedo bomber from 1940 until 1943, but was never considered a really successful type (but was used in the attacks on the German battle cruisers Scharnhorst and Gneisenau). From 1939 it was also built in Australia with Pratt&Whitney Twin Wasp engines (1,200 HP), and enjoyed some success against Japanese shipping.
