The story
In 1845, Joseph Wright, a London coach builder, leased land in Saltley, Birmingham with the intention of building a factory for the production of railway rolling stock. Wright, realising that the future lay in the development of the railways devoted his energies, together with those of his sons to building rolling stock and by the 1850s his Saltley site had massively expanded and he was employing a work force of about 800 people. In addition to building stock for practically all the British railways, the firm completed contracts for many countries world-wide. They also had premises in Shrewsbury.
In 1902 rationalisation of the rolling stock industry began when the Metropolitan Amalgamated Railway Carriage and Wagon Co. Ltd. was formed, incorporating Joseph Wright's old firm with other well known companies such as Ashbury, Brown and Marshalls, Oldbury and Lancaster railway carriage companies. In 1929 Vickers, after acquiring the shares of the Metropolitan Company, came together with Cammell Laird and each merged their rolling stock interests to form the great undertaking of Metropolitan-Cammell Ltd.
From Wikipedia’s article on Midland Railway Carriage and Wagon Company, shared under CC BY-SA 4.0.3