LMS Rebuilt Royal Scot Class

LMS Rebuilt Royal Scot Class
Technical specifications
Manufacturer(s)	LMS Derby Works
Manufacturer(s)	LMS Derby Works
Build date	Originally Built: 1927-1930 Rebuilt: 1943–1955
Total produced	70
Classification	6P; reclassified 7P in 1951
Rail gauge	4 Foot 8 Inches
Valve gear	Walschaerts
Cylinders	Three
Boiler type	LMS Type 2A
Boiler pressure	250 psi (1.72 MPa) superheated
Bore stroke	18 in × 26 in (457 mm × 660 mm)
Fuel type	Steam (Coal & Water)
Performance figures
Tractive effort	33,150 lbf (147.46 kN)
Service information
Running numbers	LMS: 6100–6169 BR: 46100–46169
Disposition details
Disposition	Two preserved, remainder were scrapped

The London Midland and Scottish Railway (LMS) Rebuilt Royal Scot Class is a class of 4-6-0 steam locomotives. 70 members of this class were rebuilt by the LMS and its successor British Railways (BR) from LMS Royal Scot Class engines by the replacement of their life expired parallel boilers with a type 2A boiler over the period 1943–1955. (The class sometimes is numbered 71 as it included a prototype 1935 rebuild LMS (4)6170 British Legion, but sufficient technical differences existed which dictate that it is treated separately). They were the second type of LMS 2 and 2A boilered 4-6-0 locomotives, after the rebuild of LMS 6399 Fury into British Legion and the LMS Rebuilt Jubilee Class.

LMS gave them the power classification 6P; this was later revised by BR to 7P.

Rebuilding

Year	Number rebuilt	Numbers
1943	9	6103/8/9/12/7/24/5/32/46
1944	9	6116/9/20/7/9/31/3/8/45
1945	11	6101/22/6/44/9/50/2/9/60/6/9
1946	10	6104/14/8/21/8/39/47/57/61/8
1947	3	6111/5/35
1948	4	46105/54/62/7
1949	6	46102/6/23/30/43/53
1950	6	46100/7/13/36/41/55
1951	2	46142/64
1952	3	46140/58/65
1953	4	46110/34/51/63
1954	2	46148/56
1955	1	46137
Total	70

1948 Exchange trials

File:Waterloo LMS Rebuilt 'Scot' 4-6-0 with Atlantic Coast Express geograph-2652615-by-Ben-Brooksbank.jpg

46154 The Hussar during the 1948 exchange trails with an ex-WD tender.

In the 1948 Locomotive Exchange Trials, carried out by the recently nationalized British Railways, involved 46154 The Hussar and 46162 Queens Westminster Rifleman. Apparently a rebuilt 'Royal Scot' proved capable of matching the maximum performance of the much larger LMS Coronation Class.

Details

Note: Date built refers to the 'LMS build and Rebuild date'.

LMS No.	BR No.	Name	Builder	Date built	Date rebuilt	Date withdrawn	Notes
6100	46100	Royal Scot	Derby	Oct 1927	Jun 1950	Oct 1962	Permanently swapped identities with 6152 in 1933. Swap engine 6152 Preserved under 6100's identity.
6101	46101	Royal Scots Grey	North British	Sep 1927	Nov 1945	Sep 1963
6102	46102	Black Watch	North British	Sep 1927	Oct 1949	Dec 1962
6103	46103	Royal Scots Fusilier	North British	Sep 1927	Jun 1943	Dec 1962	First locomotive to be rebuilt with a taper boiler.
6104	46104	Scottish Borderer	North British	Sep 1927	Mar 1946	Dec 1962
6105	46105	Cameron Highlander	North British	Sep 1927	Mar 1948	Dec 1962
6106	46106	Gordon Highlander	North British	Sep 1927	Sep 1949	Dec 1962	Fitted with BR style smoke deflectors Dec. 1952
6107	46107	Argyll and Sutherland Highlander	North British	Sep 1927	Feb 1950	Dec 1962
6108	46108	Seaforth Highlander	North British	Sep 1927	May 1948	Jan 1963
6109	46109	Royal Engineer	North British	Sep 1927	Jul 1943	Dec 1962
6110	46110	Grenadier Guardsman	North British	Sep 1927	Jan 1953	Feb 1964
6111	46111	Royal Fusilier	North British	Oct 1927	Oct 1947	Oct 1963
6112	46112	Sherwood Forester	North British	Oct 1927	Sep 1943	May 1964
6113	46113	Cameronian	North British	Oct 1927	Dec 1950	Dec 1962
6114	46114	Coldstream Guardsman	North British	Oct 1927	Jun 1946	Oct 1963
6115	46115	Scots Guardsman	North British	Oct 1927	Aug 1947	Jan 1966	Preserved – last to be withdrawn.
6116	46116	Irish Guardsman	North British	Oct 1927	Aug 1944	Sep 1963
6117	46117	Welsh Guardsman	North British	Nov 1927	Dec 1943	Nov 1962
6118	46118	Royal Welch Fusilier	North British	Nov 1927	Dec 1946	Jun 1964
6119	46119	Lancashire Fusilier	North British	Nov 1927	Sep 1944	Dec 1963
6120	46120	Royal Inniskilling Fusilier	North British	Dec 1927	Nov 1944	Jul 1963
6121	46121	H.L.I. from 1928	North British	Nov 1927	Aug 1946	Dec 1962	Renamed 15 January 1949
		Highland Light Infantry, City of Glasgow Regiment
6122	46122	Royal Ulster Rifleman	North British	Nov 1927	Sep 1945	Nov 1964
6123	46123	Royal Irish Fusilier	North British	Nov 1927	May 1949	Oct 1962
6124	46124	London Scottish Regiment	North British	Nov 1927	Dec 1943	Dec 1962
6125	46125	Lancashire Witch	North British	Sep 1927	Aug 1943	Oct 1964	Renamed June 1936
		3rd Carabinier
6126	46126	Sans Pareil	North British	Sep 1927	Jun 1945	Oct 1963	Renamed June 1936
		Royal Army Service Corps
6127	46127	Novelty	North British	Sep 1927	Aug 1944	Dec 1962	Renamed June 1936
		The Old Contemptibles
6128	46128	Meteor	North British	Sep 1927	Jun 1946	May 1965	Renamed April 1936
		The Lovat Scouts
6129	46129	Comet	North British	Sep 1927	Dec 1944	Jun 1964	Renamed January 1936
		The Scottish Horse
6130	46130	Liverpool	North British	Nov 1927	Dec 1949	Dec 1962	Renamed June 1935
		The West Yorkshire Regiment
6131	46131	Planet	North British	Sep 1927	Dec 1949	Dec 1962	Renamed May 1936
		The Royal Warwickshire Regiment
6132	46132	Phoenix	North British	Sep 1927	Oct 1944	Oct 1962	Renamed May 1936
		The King's Regiment Liverpool
6133	46133	Vulcan	North British	Oct 1927	Jul 1944	Feb 1963	Renamed May 1936
		The Green Howards
6134	46134	Atlas	North British	Oct 1927	Dec 1954	Nov 1962	Renamed May 1936
		The Cheshire Regiment
6135	46135	Samson	North British	Oct 1927	Jan 1947	Dec 1962	Renamed May 1936
		The East Lancashire Regiment
6136	46136	Goliath	North British	Oct 1927	Mar 1950	Apr 1964	Renamed May 1936 at Carlisle Citadel station
		The Border Regiment
6137	46137	Vesta	North British	Oct 1927	Mar 1955	Oct 1962	Renamed May 1936. Last locomotive to be rebuilt.
		The Prince of Wales's Volunteers (South Lancashire)
6138	46138	Fury	North British	Oct 1927	Jun 1944	Feb 1963	Renamed October 1929
		The London Irish Rifleman
6139	46139	Ajax	North British	Oct 1927	Nov 1946	Oct 1962	Renamed May 1936
		The Welch Regiment
6140	46140	Hector	North British	Oct 1927	May 1952	Nov 1965	Renamed May 1936
		The King's Royal Rifle Corps
6141	46141	Caledonian	North British	Nov 1927	Oct 1950	Apr 1964	Renamed June 1936
		The North Staffordshire Regiment
6142	46142	Lion	North British	Nov 1927	Feb 1951	Jan 1964	Renamed May 1936
		The York and Lancaster Regiment
6143	46143	Mail	North British	Nov 1927	Jun 1949	Dec 1963	Renamed July 1934
		The South Staffordshire Regiment
6144	46144	Ostrich	North British	Nov 1927	Jun 1945	Jan 1964	Renamed January 1933
		Honourable Artillery Company
6145	46145	Condor	North British	Dec 1927	Jan 1944	Dec 1962
		The Duke of Wellington's Regt. (West Riding)
6146	46146	Jenny Lind	North British	Nov 1927	Oct 1943	Dec 1962	Renamed May 1936
		The Rifle Brigade
6147	46147	Courier	North British	Nov 1927	Sep 1946	Dec 1962
		The Northamptonshire Regiment
6148	46148	Velocipede	North British	Dec 1927	Jul 1954	Nov 1964	Renamed October 1935
		The Manchester Regiment
6149	46149	Lady of the Lake	North British	Dec 1927	Apr 1945	Aug 1963	Renamed May 1936
		The Middlesex Regiment
6150	46150	The Life Guardsman	Derby	Jun 1930	Dec 1945	Nov 1963
6151	46151	The Royal Horse Guardsman	Derby	Jun 1930	Apr 1953	Dec 1962
6152	46152	The King's Dragoon Guardsman	North British	Jun 1930	Aug 1945	Apr 1965	Permanently swapped identities with 6100 in 1933. Preserved under identity of 6100 - first to be withdrawn.
6153	46153	The Royal Dragoon	Derby	Jun 1930	Aug 1949	Dec 1962
6154	46154	The Hussar	Derby	Jul 1930	Mar 1948	Dec 1962
6155	46155	The Lancer	Derby	Jul 1930	Aug 1950	Dec 1964
6156	46156	The South Wales Borderer	Derby	Oct 1930	May 1954	Oct 1964
6157	46157	The Royal Artilleryman	Derby	Jul 1930	Jan 1946	Jan 1964
6158	46158	The Loyal Regiment	Derby	Aug 1930	Sep 1952	Oct 1963
6159	46159	The Royal Air Force	Derby	Aug 1930	Oct 1945	Dec 1962
6160	46160	Queen Victoria's Rifleman	Derby	Aug 1930	Feb 1945	May 1965
6161	46161	The King's Own	Derby	Sep 1930	Oct 1946	Dec 1962	The King's Own carried from Sep. 1930 to Jun. 1931
		King's Own
6162	46162	Queen's Westminster Rifleman	Derby	Sep 1930	Jan 1948	May 1964
6163	46163	Civil Service Rifleman	Derby	Sep 1930	Oct 1953	Aug 1964
6164	46164	The Artists' Rifleman	Derby	Sep 1930	Jun 1951	Dec 1962
6165	46165	The Ranger (12th London Regt.)	Derby	Sep 1930	Jul 1952	Nov 1964
6166	46166	London Rifle Brigade	Derby	Oct 1930	Jan 1945	Sep 1964
6167	46167	The Hertfordshire Regiment	Derby	Oct 1930	Dec 1948	Apr 1964
6168	46168	The Girl Guide	Derby	Oct 1930	Apr 1946	May 1964
6169	46169	The Boy Scout	Derby	Oct 1930	May 1945	May 1963
6170	46170	British Legion	North British	Feb 1930	Oct 1935	Dec 1962	Rebuilt from experimental high pressure locomotive Fury with non-interchangeable boiler. It was the only Rebuilt Scot to carry Crimson Lake livery in service, and a single chimney.

Accidents

File:Irish Mail train crash at Penmaenmawr, August 27 1950 (14866147008).jpg

The aftermath of the Penmaenmawr railway accident in 1950 - 46119 Lancashire Fusilier with accident damage

• On 27 August 1950, 46119 Lancashire Fusilier was hauling the Irish Mail which was in a rear-end collision with a light engine LMS Hughes Crab No. 42885 at Penmaenmawr, Denbighshire due to a signalman's error. Six people died as a result of the crash.
• On 21 April 1952, 46117 Welsh Guardsman was one of two hauling an express passenger train which derailed at Blea Moor Loops, West Riding of Yorkshire due to a defect on the other locomotive causing a set of points to move under the train.

Withdrawal

File:46151 Staveley (GC) MPD '63 (27001040102).jpg

46151 The Royal Horse Guardsman, dumped at Staveley MPD in 1963 - she had been withdrawn the previous year.

All were withdrawn between 1962 and 1965 in accordance with the 1955 Modernization Plan.

Table of withdrawals

Year!	Quantity in service at start of year!	Quantity withdrawn	Locomotive numbers
1962	70	30	46100/02–07/09/13/17/21/23–24/27/30–32/34–35/37/39/45–47/51/53–54/59/61/64
1963	40	15	46101/08/11/14/16/19–20/26/33/38/43/49–50/58/69
1964	25	20	46110/12/18/22/25/29/36/41–42/44/48/55–57/62–63/65–68
1965	5	4	46128/40/52/60
1966	1	1	46115

Preservation

Of the 70 engines to be rebuilt only 2 members of the class have survived into preservation.

Note: Loco numbers in bold mean the number they are presently wearing.

Number		Name	Builder	Built	Rebuilt	Withdrawn	Livery	Location	Owners	Status	Photograph	Notes
LMS	BR
6100 (former 6152)	46100	Royal Scot (former "The King's Dragoon Guardsman")	Derby Works	Jun 1930 (Original engine built Oct 1927)	Jun 1950	Oct 1962	BR Green, Early Emblem	Crewe Diesel TMD	Royal Scot Locomotive and General Trust	Stored		Withdrawn from service in December 2024 following expiry of it's boiler ticket.
6115	46115	Scots Guardsman	North British Locomotive Company	Oct 1927	Aug 1947	Jan 1966	BR Green, Late Crest	Carnforth Motive Power Depot	David Smith	Operational, Mainline Certified (2019-ongoing).

Gallery