Most of them became constituent parts of the emerging main-line railway companies, often immediately after being built.
[1] They have been listed under Scottish; and English and Welsh early railways;[2][3] and under the later main line company which absorbed them.
Many of those had been in separate existence since being set up in the 19th century, and were only in 1923 losing that individuality.
An example is the Dore and Chinley Railway which was floated as a company and then adopted and largely financed by the Midland.
Independent Lines operated by the Caledonian Railway This list of lines in England and Wales is ordered roughly by region, with the exception of the GWR which was a very large company even pre-1900.