Coventry Climax
Coventry Climax was a British forklift truck
Forklift truck
A forklift is a powered industrial truck used to lift and transport materials. The modern forklift was developed in the 1920s by various companies including the transmission manufacturing company Clark and the hoist company Yale & Towne Manufacturing...

, fire pump, and speciality engine
An engine or motor is a machine designed to convert energy into useful mechanical motion. Heat engines, including internal combustion engines and external combustion engines burn a fuel to create heat which is then used to create motion...

The company was started in 1903 as Lee Stroyer
Lee Stroyer
Lee Stroyer was a British petrol engine manufacturing company and a producer of a limited number of cars.Founded in East Street, Coventry in 1903 by H...

, but two years later, following the departure of Stroyer, it was relocated to Paynes Lane, Coventry
Coventry is a city and metropolitan borough in the county of West Midlands in England. Coventry is the 9th largest city in England and the 11th largest in the United Kingdom. It is also the second largest city in the English Midlands, after Birmingham, with a population of 300,848, although...

, and renamed to Coventry-Simplex by H. Pelham Lee, a former Daimler
Daimler Motor Company
The Daimler Motor Company Limited was an independent British motor vehicle manufacturer founded in London by H J Lawson in 1896, which set up its manufacturing base in Coventry. The right to the use of the name Daimler had been purchased simultaneously from Gottlieb Daimler and Daimler Motoren...

 employee, who saw a need for competition in the nascent piston engine market.

An early user was GWK
GWK (car)
The GWK was a British car made in Maidenhead, Berkshire, between 1911 and 1931. It got its name from its founders, Arthur Grice, J Talfourd Wood and C.M. Keiller. The cars were unusual in using a friction drive system....

, who produced over 1,000 light cars with Coventry-Simplex two-cylinder engines between 1911 and 1915.