|01/01/1923||Dundee and Newtyle Railway
Arbroath and Forfar Railway
Glasgow and Paisley Joint Railway
Glasgow and South Western Railway
Callander and Oban Railway
Glasgow and Kilmarnock Joint Railway
Cathcart District Railway
Lanarkshire and Ayrshire Railway
Portpatrick and Wigtownshire Joint Committee
Brechin and Edzell District Railway
Dornoch Light Railway
Wick and Lybster Light Railway|
Grouped into London, Midland and Scottish Railway.
|01/01/1923||Dundee and Arbroath Railway
Dumbarton and Balloch Joint Line|
Jointly owned by the London, Midland and Scottish Railway and the London and North Eastern Railway.
|/ /1924||Gleneagles Hotel|
Opened, having been built for the Caledonian Railway which became part of the London, Midland and Scottish Railway in 1923
|/ /1928||David MacBrayne Ltd|
[London Midland and Scottish Railway]
Coast Lines Limited, David MacBrayne (1928) Ltd
Company bought by the London, Midland and Scottish Railway and Coast Lines Limited and reformed the company as David MacBrayne (1928) Ltd
|/ /1934||Highland Railway|
London, Midland and Scottish Railway withdraw locomotive 103.
|/ /1939||Brynmawr and Blaenavon Railway|
After closure of the Leadhills and Wanlockhead Branch (Caledonian Railway), Waenavon (1,400 feet) becomes the highest station on the London, Midland and Scottish Railway.