This company was founded in 1935 in Bristol, UK on the facilities of the former Douglas engine factory with the idea of manifacturing all kind of aviation engines and obtaining the license for building Hispano Suiza engines.

-And they also obtained the licenses for the General Aircraft Ltd V4 and V6 engines.

"Sprite 40 hp"

"Front view of the Sprite 40 hp"

"Sprite"

-Douglas made various models of which the Sprite was the most important one, giving 22-27 hp. But a 1.5 litre variant reached 40 hp at 2800 rpm.

-The Aeroengines V4 had its cylinders inverted in V. It was air-cooled and the propeller was driven directly.

-As it was established on the Douglas motercycle engine factory, it made some of its engines, including the Sprite Mark I,  II and III.

-The MK I was a clear copy of the Douglas 26/28 hp that had single ignition.

“Mk.1”

-The one that had four inverted cylinders in V was named "Monarch".

"Front view of the V4"

-The V4 gave between 85 and 95 hp, The V6 was identical but with 6 cylinders and gave 135 hp at 2350 rpm.

"Side view of the V4"

-It also manifactured the Pixie engines which were built by Weir Ltd in Glasgow until Aero Engines continued their production.

-For more information see Weir and Aero Pixie. These engines had four inverted cylinders and were air-cooled. They gave 50 hp at 2600 rpm.

“Aero Pixie”

"Another view of the Aero Engines Pixie"