Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,396 pages of information and 233,863 images on early companies, their products and the people who designed and built them.
of Tutbury, Burton-on-Trent
1921 Makers of two-stroke vertical internal combustion engines for stationary and marine applications, featuring stepped pistons (the larger diameter piston being used for scavenging) 
At an earlier date, engines with similar features were produced by Record Engineering Co of Eccles, Manchester, patented by John Davidson. Featured in 'The Engineer' 30th January 1914. It has not yet been established whether these companies were one and the same.
1922 Built a prototype car