You are right Mosquitoman. It's GLOSTER F.9/37 - This twin-engined fighter was designed under the direction of W G Carter to Specification F.9/37 as a single-seater carry-ing an armament of four 0.303 in (7.7 mm) Brownings and two 20 mm cannon in the nose. A prototype (L7999) with 1,060 hp Taurus II radials flew on April 3, 1939, being re-engined with 935 hp Taurus Ills in 1940, and a second prototype (L8002) with 880 hp Peregrine I liquid-cooled in-line engines flew on February 22, 1940. The requirement for an aircraft in this category was dropped by the RAF and no production ensued.
Data are for the Taurus version: Max speed, 360 mph (579 km/h) at 15,000 ft (4,570 m). Time to 28,000ft (8,534 m), 19.6 min. Service ceiling, 30,000 ft (9,144 m). Gross weight, 11,615 Ib (5,269 kg). Span, 50ft O'h in (15.24 m). Length, 37ft O'kin (11.27 m).