Scanned from a picture in a WW2 era scrapbook of aircraft pictures.
The Blackburn B-25 Roc, a WW2 Fleet Air Arm fighter who's armament was four turret mounted machine guns
The Roc entered service in 1939 but was found to be too slow to be an effective defensive fighter for the fleet, by the end of 1940 they were relegated to search and rescue duties and target tugs, they were withdrawn from service in 1943