Another private venture design for the F.7/30 competition, the Type 133 single-seat fighter featured a forward fuselage of girder-type construction, a monocoque rear fuselage and Alclad stressed skinning. Powered by a Bristol Mercury VIS.2 rated at 620hp for take-off and carrying an armament of two synchronised 7.7mm Vickers guns in the fuselage and a Lewis gun of similar calibre mounted above each mainwheel housing, the Type 133 flew for the first time on 8 June 1934.
After completing a considerable amount of flying, on 8 March 1935 the prototype got into a flat spin and the engine stopped, the pilot baling out and the aircraft being destroyed. No further development was undertaken.
Engine: Bristol Mercury VIS.2, 620hp
Take-off weight: 2149 kg / 4738 lb
Empty weight: 1053 kg / 2321 lb
Wingspan: 11.89 m / 39 ft 0 in
Length: 8.53 m / 27 ft 12 in
Height: 2.97 m / 9 ft 9 in
Wing area: 22.95 sq.m / 247.03 sq ft
Max. speed: 418 km/h / 260 mph
Armament: 2 x 7.7mm Vickers guns, 1 x Lewis gun