Dawson Car Co
The Dawson Car Company of clay Lane, Coventry
1919 March. Advert for the 11-12 hp car. 
1919 October 25th. Company incorporated
1919 November. Launched their car at the 1919 Motor Show
The only car made by the company was the 11-12 hp with 1,795 cc overhead camshaft engine coupled to a 3 speed gearbox. It was available in four body styles, most bodied by Charlesworth, and unusually, customers could not buy a chassis only. Most were sold in Dawson Blue with black wings. Final production seems to have been in 1921 after about 70 cars were made.
For a short time it became the Clay Lane Engineering Co
In 1921 the Triumph Motor Co bought Dawson's premises and fittings in Clay Lane, Stoke, Coventry.
Sources of Information
- The Autocar of 29th March 1919 p8
- Western Daily Press - Friday 27 February 1920
-  Wikipedia