Powered by four 1,375-hp Bristol Hercules II engines, and with John Lankester Parker the pilot, and now called the Stirling, the prototype flew for the first time on the 14th May 1939. However, on landing

which was powered by the 890-hp Bristol Mercury XII engine, had a top speed of 219 mph, range of 600 miles with a service ceiling of 26,000 ft. Armament was four 0.303-in machine-guns and 500lb bombs.

5 Westland Lysander 4 Bristol Blenheim 6 Hawker Hurricane Advanced Air Striking Force (13 squadrons) 8 Fairey Battle 2 Bristol Blenheim 3 Hawker Hurricane The two letters in () are the squadron

housed a crew of four and was powered by a 750-hp Bristol Pegasus VI engine giving the aircraft a top speed of 135 mph, range of 600 miles and a service ceiling of 18,500 ft. Armament consisted of two

known as the Vincent Mk I it was powered by the 635-hp Bristol Pegasus IIM3 engine, giving the aircraft a top speed of 142 mph, range of 625 miles with a service ceiling of 19,000 ft. Armament was one

The Wellesley Mk I was powered by the 925-hp Bristol Pegasus XX engine, this gave the aircraft a top speed of 222 mph, range of 1,100 miles with a service ceiling of 26,100 ft. Armament consisted of one

a Manchester Mk II, powered by either Bristol Centaurus or Napier Sabre engines was planned, but none were ever produced. This would be followed by the Manchester Mk III, this would have an increased

The Harrow Mk I was powered by a pair of 850-hp Bristol Pegasus X engines giving the aircraft a top speed of 190 mph. This was quickly followed by the 925-hp Bristol Pegasus XX powered Harrow Mk II. This

powered by four 950-hp Bristol Pegasus X engines, and featured a British flying boat first of power operated turrets being fitted. A large aircraft which had two levels and a crew of, normally, between

Bristol Hercules Powered Lancaster B.II Of the Lancaster variants produced, all would be powered by either Rolls-Royce or Packard Merlin engines, the exception was the Lancaster B.II, which was powered