The General Railway Workers' Union was founded in 1890 and amalgamated with the Amalgamated Society of Railway Servants of England, Ireland, Scotland and Wales and the United Pointsmen's and Signalmen's Society in 1913 to form the National Union of Railwaymen.
The membership of the General Railway Workers' Union appears to have been concentrated in the railway workshops and amongst railwaymen engaged in handling goods traffic.
Reference: P.S. Bagwell, 'The railwaymen. History of the National Union of Railwaymen' (George Allen and Unwin, 1963) and P.S. Bagwell, 'The railwaymen. Volume 2: Beeching era and after' (George Allen and Unwin, 1982).