Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 129,283 pages of information and 204,289 images on early companies, their products and the people who designed and built them.
of Union Works, Bear Gardens, London, SE1.
1927 Company founded by Marcel Porn, a Romanian by birth (he died in 1949). Address was Porn and Dunwoody Ltd. of 72-78, Fleet-street, London, E.C.4.
1927 They represented the Motorenfabrik Deutz A.G. interests in Great Britain and Ireland.
Post WWII Produced the Uniporn engine in three sizes up to 12 hp. 
The company was also a manufacturer and installer of lifts.