List of constituents of the Great Western Railway


The Great Western Railway was incorporated by Act of Parliament in 1835 and nationalised on 1 January 1948. During this time it amalgamated with, or purchased outright, many other railway companies. These are listed here in two groups. The early amalgamations often involved railway companies that were already being financially supported by the GWR. The Railways Act 1921 brought many new companies into the fold including many successful Welsh lines.
Key:

Early amalgamations and purchases

The following companies were absorbed into the Great Western Railway as a result of the Railways Act 1921; however they were incorporated into the new larger business on the different dates shown.