The picture, taken in May 1939, shows the M.B.2 flying at Heston with the definitive fin and rudder.

The M.B.2 photographed at Martlesham Heath in November 1938 after the tiny fin was added.

Two photographs showing the gun ammunition box and the installation of the eight Browning 0-303in machine guns. Later, the Martin Baker company was instructed to install two 20mm cannon in each of the M.B.2’s wings and carry out 10hr of flight testing and firing.

Further view of the M.B.2 taken at Heston in May 1939. In the photograph the crash pylon is extended to give protection to the pilot in the event of the aircraft overturning.

Taken at Heston in May 1939, this photograph shows the sleek lines of the M.B.2 to advantage. The aircraft was painted deep olive all over and bore roundels outlined in yellow.

The M.B.2 photographed at Martlesham in June 1939, where further testing showed that modifications to the rudder had made it considerably more effective. By this time the serial number P9594 had been applied.