Boulton Paul P.94
The first Defiant prototype had not been fitted with a turret at first and had an impressive top speed. In 1940, Boulton Paul removed the turret from the prototype as a demonstrator for a fixed-gun fighter based on Defiant components. The armament offered was either 12 .303 inches Browning machine guns (six per wing) or four 20 millimetres Hispano cannon in place of eight of the Brownings. The guns could be depressed for ground attack. By that time, the RAF had sufficient quantities of Hawker Hurricanes and Supermarine Spitfires and did not require a new single-seat fighter. With a calculated top speed of about 360 miles per hour (580 km/h) at 21,700 feet (6,600 m) the P.94 was almost as fast as a contemporary Spitfire although less manoeuvrable.
K8310, one of the Defiant prototypes. Modified as a mockup to show what a turretless version might look like 
K8310, one of the Defiant prototypes. Modified as a mockup to show what a turretless version might look like
