LMS Royal Scot Class 4-6-0

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The London Midland & Scottish (LMS) 'Royal Scot' class were steam locomotives with a 4-6-0 wheel arrangement, introduced in 1927 for working express passenger trains.
46115 - Scots Guardsman - at Stirling on 24/04/22 with the Great Britain XIV railtour Photo by Clydeside311


  • Fifty locomotives of this class were built for LMS by North British Locomotive Company in 1927, with 20 more later built in Derby.
    • 6100-6124 built at NBL Queens Park Works in 1927
    • 6125-6149 built at NBL Hyde Park Works in 1927
    • 6150-6169 built at LMS Derby Works in 1930.
  • NBL Hyde Park works also built experimental loco 6399 'FURY' for LMS in 1929. This was rebuilt in 1935 at Crewe works with a conventional tapered boiler and renumbered 6170.
  • The original NBL built 6100 'Royal Scot' swapped identities with Derby built 6152 in 1933.

  • Originally built with parallel boilers, the whole class was rebuilt with tapered boilers, new frames and cylinders between 1943 and 1955.

  • From September 1927, locos 6127-6132 were allocated Polmadie and worked the 'Royal Scot' and 'Night Scot' from Glasgow Central to Carlisle (where English based locos took over).
    • By 1933 these duties had been taken over by larger locos.

  • After nationalisation in 1948, the locos were renumbered by British Railways as 461xx, and designated as class 7P.

  • Polmadie (66A) based locos after nationalisation were:
LMS No. BR No. Name Rebuilt Withdrawn
6102 46102 BLACK WATCH 10/1949 12/1962
6104 46104 SCOTTISH BORDERER 03/1946 12/1962
6105 46105 CAMERON HIGHLANDER 04/1948 12/1962
6107 46107 ARGYLL AND SUTHERLAND HIGHLANDER 02/1950 12/1962
6121 46121 HIGHLAND LIGHT INFANTRY, CITY OF GLASGOW REGIMENT 07/1949 12/1962

  • 46121 had replaced 46143 at Polmadie in July 1949.
  • 46102 & 46104 were reallocated to Corkerhill (67A) in October 1962.
  • 46107 & 46121 were stored at Polmadie in October 1962 before final withdrawal in December 1962.
  • 46105/07/21 were stored at Parkhead Shed from May 1963 to May 1964.
  • The five ex-Polmadie locos were scrapped at McWilliams of Shettleston in Summer 1964.

  • Locos from Crewe North (5A) regularly worked into Scotland.
  • In the 1950s, 'Royal Scot' class locos based at Leeds Holbeck (20A/55A) regularly worked into Glasgow St. Enoch on trains such as the Thames-Clyde Express.

  • From June 1963 a number of the class were allocated to Carlisle Kingmoor (12A), frequently working into Scotland.
  • Five locos (46115/42128/46140/46152/46160) remained in service at 12A into 1965, with the last of the class 46115 withdrawn on 01/01/66.

46115 Scots Guardsman departing Carlisle with 9.50am Manchester to Glasgow & Edinburgh on 02.08.1964 Photo by robinbarnes



Preserved Locos on the Mainline


  • 46100 'Royal Scot' appeared on Railtours in Scotland in 2016 & 2022
  • 46115 'Scots Guardsman' appeared on Railtours in Scotland in 2009, 2011-2014, 2017, 2021-2023.



See Also


External Links


Created by Dysgraphyk and last modified by him at 00:42, 10 of February 2025.