Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 140,754 pages of information and 227,392 images on early companies, their products and the people who designed and built them.
of Oldham Street, Liverpool
1796 Company established - presumably refers to the Northampton coach making business of Francis Mulliner.
1914 Motor coach and motor body builders and auto car engineers. 
1920 In voluntary liquidation