National Gas & Oil Engine Co. Ltd

Founded in 1890 in Ashton-under-Lyne as the National Gas Engine Co. The name changed to the National Gas and Oil Engine Co. in 1932. It merged with Mirrlees, Bickerton and Day to form Mirrlees National Ltd. in 1961. In 1977 the company became Mirrlees-Blackstone, part of Hawker Siddeley.