The Machine Gun BESA was a British version of the Czech ZB53 (Model 37) machine gun and used by the UK for tank armament in World War II.
A larger version at 15 mm calibre, also belt-fed, and weighing 125 lb (57 kg) was developed by BSA again as a vehicle armament. It was able to be fired single shot rather than just full automatic. It was used on the Light Tank Mk VI.
Medium machine guns | Tank guns | World War II weapons of the United Kingdom