British Rail Class 101

The British Railways Class 101 is a type of diesel multiple unit (DMU) which were built by Metro-Cammell at Washwood Heath Locomotive Works in Birmingham, England from 1956 to 1959, following construction of a series of prototype units.
The class 101 power cars featured Leyland 0.680 engines and SCG epicyclic gearboxes, standard UK bus/truck units of the time. The engines were horizontally mounted under the floors between the bogies.
This class proved to be the most successful and second longest-lived of all BR's First Generation DMUs, (the longest being the Class 121 in 2017) with the final five units being withdrawn on 24 December 2003. The oldest set was, by then, just over 47 years old.
== Operations ==
Class 101 DMUs were used across much of the British Rail network (with the notable exceptions of the Southern Region and the Western Region - apart from some inter-regional workings). Notable concentration of services included:
* East of Scotland (to/from Edinburgh Waverley)
* West Midlands
* Teesside
* Tyneside
* West Yorkshire
== In Popular Culture ==
The British Rail Class 101 is used as basis for Daisy the Diesel Railcar in Thomas & Friends.
== Original TOPS classes ==
When TOPS was originally introduced only the Driving Motor Brake Second (DMBS) and the Driving Motor Composite (with Lavatory) (DMCL) were classified as Class 101 (AEC engines) or Class 102 (Leyland engines). The Driving Trailer Composite (with Lavatory) (DTCL) were either Class 144 or Class 147. The Trailer Seconds (with Lavatory) (TSL) were Class 162, the Trailer Brake Second (with Lavatory) (TBSL) were Class 168 and the Trailer Composite (with Lavatory) (TCL) were Class 171. Later all the cars were reclassified, becoming Class 101.
Table of orders and numbers
Fleet 
numbers	Type 	Order	Seating 	Weight	Lot No	Diagram	Formation (Original)	Year built
50138–50151	DMC(L)	101/1	12F 45S (2/2)	32t 	30249 	BR 618 	4-car 	1956
50152–50157	DMBS 	101/2	52S 	32t 	30252 	BR 523 	Power-Twin 	1956/7
50158–50163	DMC(L)	101/1	12F 53S 	32t 	30253 	BR 620 	Power-Twin 	1956/7
50164–50167	DMBS 	101/2	52S 	32t 	30254 	BR 523 	Power-Twin 	1956/7
50168–50171	DMC(L)	101/1	12F 53S 	32t 	30255 	BR 620 	Power-Twin 	1956/7
50172–50197	DMC(L)	101/1	12F 53S 	32t 	30256 	BR 620 	4-car 	1957
50198–50209	DMBS 	101/2	52s 	32t 	30259 	BR 523 	P/Trailer 	1957
50210–50233	DMBS 	101/2	52s 	32t 	30261 	BR 523 	P/Trailer 	1957
50234–50245	DMC(L)	101/1	12F 45S 	32t 	30263 	BR 619 	4-car 	1957
50246–50248	DMBS 	101/2	52S 	32t 	30339 	BR 619 	P/Trailer 	1957
50250–50259	DMBS 	101/2	52S 	32t 	30266 	BR 523 	Power-Twin 	1957
50260–50269	DMC(L)	101/1	12f 53S 	32t 	30267 	BR 621 	Power-Twin 	1957
50290–50292	DMBS 	101/2	52S 	32t 	30270 	BR 523 	3-car 	1957
50293–50296	DMBS 	101/2	52S 	32t 	30270 	BR 523 	Power/Trailer 2-car 	1957
50303–50320	DMBS 	101/2	52S 	32t 	30275 	BR 523 	3-car 	1958
50321–50338	DMC(L)	101/1	12F + 53S 	32t 	30276 	BR 621 	3-car 	1958
50745–50747	DMC(L)	101/1	12F + 53S 	32t 	30271 	BR 621 	3-car 	1957
50748–50751	DMC(L)	101/1	12F + 53S 	32t 	30271 	BR 621 	4-car 	1957
51174–51203	DMBS 	101/1	52S 	32t 	30467 	BR 523 	Power/Trailer 2-car 	1958
51204–51223	DMBS 	101/2	52S 	32t 	30467 	BR 523 	Power/Trailer 2-car 	1958
51224–51253	DMBS 	101/2	52S 	32t 	30467 	BR 523 	Power/Trailer 2-car 	1958
51425–51434	DMBS 	102/2	52S 	32t 	30500 	BR 523 	Power/Trailer 2-car 	1959
51435–51444	DMBS 	102/2	52S 	32t 	30500 	BR 523 	4-car 	1959
51445–51470	DMBS 	102/2	52S 	32t 	30500 	BR 523 	3-car 	1959
51495–51504	DMC(L)	102/1	12f+53S 	32t 	30501 	BR 621 	P/Twin 	1959
51505–51514	DMC(L)	102/1	12f+53S 	32t 	30501 	BR 621 	4-car 	1959
51515–51540	DMC(L)	102/1	12f+53S 	32t 	30501 	BR 621 	3-car 	1959
51795–51801	DMBS 	102/2	52S 	32t 	30587 	BR 523 	3-car 	1959
51802–51808	DMC(L)	102/1	12F+53S 	32t 	30588 	BR 621 	3-car 	1959
56050–56061	DTC(L)	144 	12F+53S 	25t 	30260 	BR 630 	Power/Trailer 2-car 	1957
56062–56085	DTC(L)	144 	12F+53S 	25t 	30262 	BR 630 	Power/Trailer 2-car 	1957
56086–56089	DTC(L)	144 	12F+52S 	25t 	30272 	BR 630 	Power/Trailer 2-car 	1957
56218–56220	DTC(L)	144 	12F+45S 	25t 	30340 	BR 629 	Power/Trailer 2-car 	1957
56332–56361	DTC(L)	144 	12F+53S 	25t 	30340 	BR 630 	Power/Trailer 2-car 	1957
56362–56381	DTC(L)	144 	12F+53S 	25t 	30468 	BR 630 	Power/Trailer 2-car 	1957
56382–56411	DTC(L)	144 	12F+53S 	25t 	30468 	BR 630 	Power/Trailer 2-car 	1957
59042–59048	TS(L) 	162 	61S 	25t 	30250 	BR 622 	4-car 	1956
59049–59055	TBS(L)	168 	45S 	25t 	30251 	BR 626 	4-car 	1956
59060–59072	TS(L) 	162 	71S 	25t 	30257 	BR 623 	4-car 	1957
59073–59085	TBS(L)	168 	53S 	25t 	30258 	BR 627 	4-car 	1957
59086–59091	TS(L) 	162 	61S 	25t 	30264 	BR 622 	4-car 	1957
59092–59097	TBS(L)	168 	45S 	25t 	30265 	BR 622 	4-car 	1957
59112–59113	TBS(L)	168 	53S 	25t 	30274 	BR 627 	4-car 	1957
59114–59131	TC(L) 	171 	12F+53S 	25t 	30277 	BR 624 	3-car 	1957
59302–59304	TS(L) 	162 	71S 	25t 	30273 	BR 623 	3-car 	1957
59305–59306	TC(L) 	171 	71S 	25t 	30273 	BR 623 	4-car 	1957
59523–59542	TC(L) 	171 	12F+53S 	25t 	30277 	BR 624 	3-car 	1957
59543–59568	TC(L) 	171 	12F+53S 	25t 	30502 	BR 624 	3-car 	1958
59685–59692	TC(L) 	171 	12F+53S 	25t 	30589 	BR 624 	3-car 	1959
59569–59572	TS(L) 	164 	71S 	25t 	30510 	BR 623 	 	
1960 	 	 	 	 	 	 	 	
59573–59578	TSB(L)	165 	71S 	25t 	30510 	BR 625 	 	
1960 	 	 	 	 	 	 	 	
== Preservation ==
The Class 101 was one of the largest classes of first-generation DMUs and partly thanks to their relatively late withdrawal from revenue-earning service, numerous vehicles have been preserved on heritage railways, including the Great Central Railway and the North Yorkshire Moors Railway. There are only three centre cars preserved: at the Ecclesbourne Valley Railway, North Yorkshire Moors Railway and Mid-Norfolk Railway and none of the Trailer Brake Seconds were preserved.
Set number 	Vehicle numbers 	Vehicle numbers 	Vehicle numbers 	Livery 	Location 	Notes
Set number 	DMBS 	TCL 	DMCL 	Livery 	Location 	Notes
101685 	50164 	59539 	50160 	BR Green 	North Yorkshire Moors Railway	Last to be withdrawn, operational
960992 	50203 	 	 	 	 	
50193 	BR Blue and Grey 	Great Central Railway 	Under restoration 	 	 	
101680 	50204 	 	 	 	 	
51511 	BR Green 	North Yorkshire Moors Railway 	Stored 	 	 	
Iris 2 	50222 	 	 	 	 	
50338 	BR Green 	Barry Tourist Railway 	Operational 	 	 	
101692 	50253 	59303 (TSL) 	50170 	BR Green 	Ecclesbourne Valley Railway 	Operational
50256 	 	 	 	 	 	
56343(DTCL) 	BR Blue 	Wensleydale Railway 	Stored 	 	 	
50266(DMCL) 	 	 	 	 	 	
BR Green 	Great Central Railway 	Operational 	 	 	 	
51187 	 	 	 	 	 	
51512 	BR Green 	Cambrian Heritage Railways 	Under repair 	 	 	
51188 	 	 	 	 	 	
51505 	BR Blue 	Ecclesbourne Valley Railway 	Operational (51188 on loan to North Norfolk Railway for 2018/19)	 	 	
51189 	 	 	 	 	 	
51803 	BR Green 	Keighley and Worth Valley Railway	Operational 	 	 	
51192 	 	 	 	 	 	
56352(DTCL) 	BR Green 	North Norfolk Railway 	On loan from the National Railway Museum, operational 	 	 	
51205 	 	 	 	 	 	
56055(DTCL) 	BR Green 	Cambrian Heritage Railways 	Operational 	 	 	
101678 	51210 	 	 	 	 	
50746 	BR Blue / BR Blue and Grey 	Wensleydale Railway 	Last to be withdrawn, under restoration 	 	 	
51213 	 	 	 	 	 	
56358(DTCL) 	BR Blue and Grey / BR Blue 	East Anglian Railway Museum 	Operational 	 	 	
101695 	51226 	 	 	 	 	
51499 	BR Green 	Mid Norfolk Railway 	Operational 	 	 	
51228 	 	 	 	 	 	
56062(DTCL) 	BR Green 	North Norfolk Railway 	Operational 	 	 	
960993 	51427 	59575 (Class 111) 	50321 	BR Green 	Great Central Railway 	Operational
L836 	51434(DMBC) 	59117 	51503 	BR Blue and Grey	Mid Norfolk Railway 	Operational (Currently as 2-car only)
56342(DTCL) 	BR Blue and Grey 	Great Central Railway 	Under restoration 	 	 	
56347(DTCL) 	BR Green 	Mid Norfolk Railway 	Operational 	 	 	
56356(DTCL) 	Non Standard Green and Cream 	Barry Island Railway 	Stored 	 	 	
56408(DTCL) 	SR Malachite Green 	Spa Valley Railway 	Operational 	 	 	
50211 	 	 	 	 	 	
Regional Railways	Private Site 	Stored, cab only 	 	 	 	
50269 	Regional Railways 	Private Site 	Stored, cab only 	 	 	
51177 	 	 	 	 	 	
BR Blue 	Private Site, Ashton-under-Lyne, Lancashire	Cab only, used as a store room. 	 	 	 	
==Gallery==
File:800px-101685 at Grosmont.jpg
File:Levisham railway station MMB 04 101680.jpg
File:Daisy'sprototype.webp
File:DMU Lab 19 Iris II, Barry Tourist Railway 3.6.2012 009 (10196706745).jpg
File:DerehamDMU.jpg
File:51226 at Dereham.jpg
File:101 663 at Dereham.jpg
File:50203 at Quorn.jpg
File:50321+51427 Great Central Railway.jpg
File:50266 at Quorn.jpg
Category:Diesel trainsets
Category:United Kingdom
Category:1955 Modernisation Plan
Category:British Rail locomotives
Category:Diesel locomotives
Category:Built in 1956
Category:Metro-Cammell locomotives
Category:National Railway Museum
Category:Locomotives
Category:British Rail diesel locomotives
Category:Standard gauge locomotives
Category:Restored locomotives