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British Rail Class 421 (4CIG) | |
---|---|
In service | 1964 - 2005 (Mainline services) - 2010 (Lymington branch) |
Manufacturer | Holgate Road carriage works |
Number built | 166 (138 class 421 (4 CIG) and 28 class 422 (4 BIG) Units) |
Formation | Driving trailer + Motor coach + Trailer/Buffet + Driving trailer |
Operators | |
Specifications | |
Train length | 265 feet 8+1⁄2 inches (80.988 m) |
Width | 9 feet 3 inches (2.82 m) |
Height | 12 ft 9+1⁄4 in (3.893 m) |
Maximum speed | 90 mph (145 km/h) |
Weight | 150 long tons (152 t; 168 short tons) |
Traction motors | Four |
Power output | 4 x 250 hp (190 kW) total 1,000 hp (750 kW) |
Electric system(s) | 750 V DC third rail |
Current collector(s) | Contact shoe |
Coupling system | Drop-head buckeye [1] |
Track gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
The British Rail Class 421 (4CIG) electric multiple units were built at BR's Holgate Road carriage works between 1964 and 1972. Units were built in two batches, and were initially introduced on services on the Brighton Main Line. Later units were introduced on services to Portsmouth. These units replaced older Southern Railway-designed units, such as the 5Bel "Brighton Belle" units, and 4Cor units. The fleet's lifespan was 46 years.
The standard units contained only passenger accommodation, and formed the bulk of the fleet. They were unusual in that all four traction motors were mounted on one non-driving motor coach. Units consisted of two driving trailers, sandwiching the non-driving motor coach and an intermediate trailer.
Units were built in two batches. 'Phase 1' units were built from 1963 to 1966 for the Brighton Line, and were numbered 7301-7336. These were followed in 1970-72 by the 'Phase 2' units, built primarily for the Portsmouth line, numbered 7337-7438.
The 4Big units were similar to the standard units, but contained a buffet car in place of the intermediate trailer.
These units were also built in two batches. 'Phase 1' units were built in 1965/66, and were numbered 7031-48. 'Phase 2' units were built in 1970, and were numbered 7049-7058.
The 4Big fleet were initially classified as Class 420 by British Rail under the TOPS system introduced in 1968, and then Class 422.
The numbering of individual vehicles and details of when units were built are shown in the table below.
Phase | Type | Unit nos. | Years built | DTCsoL | MBSO | TSO (*TRSB) | DTCsoL |
---|---|---|---|---|---|---|---|
Phase 1 | 4Cig | 7301–7336 | 1964–65 | 76076–76111 | 62017–62052 | 70695–70730 | 76022–76057 |
4Big | 7031–7048 | 1964–65 | 76112–76129 | 62053–62070 | 69301–69318* | 76058–76075 | |
Phase 2 | 4Cig | 7337-7366 | 1970 | 76581–76610 | 62287–62316 | 70967–70996 | 76611–76640 |
7367–7437 | 1970–72 | 76717–76787 | 62355–62425 | 71035–71105 | 76788–76858 | ||
7438 | 1972 | 76859 | 62430 | 71106 | 76860 | ||
4Big | 7049-7058 | 1970 | 76561–76570 | 62277–62286 | 69330–69339* | 76571–76580 |
Units were facelifted between 1986 and 1993.
In 1983, two temporary 8Mig units, given the TOPS classification Class 482 and numbered 2601–2602, [2] were formed while the 4Big fleet underwent asbestos removal. They were used on the Portsmouth Direct line. Therefore, four standard 'Phase 2' 4Cig units, numbers 7401–7404, were reformed with a conventional locomotive-hauled miniature buffet carriage (RMB). Each 8Mig unit was formed by marshalling the RMB coach in between two units, one of which was reduced to three carriages, with the removal of the intermediate trailer (TSO). Thus in effect each 8Mig unit was effectively formed of 4Cig + RMB + 3Cig. The formations of the units are listed below:
8Mig unit No. | 4Cig unit | RMB coach | 3Cig unit | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Unit no. | DTCsoL | MBSO | TSO | DTCsoL | Unit no. | DTCsoL | MBSO | DTCsoL | ||
2601 | 7401 | 76751 | 62389 | 71069 | 76822 | 1872 | 7402 | 76752 | 62390 | 76823 |
2602 | 7403 | 76753 | 62391 | 71071 | 76804 | 1873 | 7404 | 76754 | 62392 | 76825 |
These units were only used during the summer of 1983, after which enough asbestos-free 4Big units were available. The two 8Mig units were disbanded and the four 4Cig unit reformed. The 4Cig units have since been renumbered several times, as shown below:
Unrefurbished | Facelifted | |||
---|---|---|---|---|
74xx series | 12xx series | 18xx series | 8Dig unit | 18xx series |
7401 | 1201 | 1868 | - | - |
7402 | 1202 | 1860 | - | - |
7403 | 1203 | 1869 | - | - |
7404 | 1204 | 1875 | 2001 | 1802 |
In 1992 four 8Dig units, numbered 2001-2004, were formed by semi-permanently coupling a 4Cig and a 4Big unit. The units were dedicated to London Victoria to Brighton express services, which were operated as the Capital–Coast Express.
The 8Dig units were formed from four 'Phase 2' 4Big units plus two 'Phase 1' and two 'Phase 2' 4Cig units. The 'Phase 1' units, numbers 1901/02 (recently renumbered from 1715/16), were fitted with Mk.6 motor bogies. One of the 'Phase 2' 4Cig units, no. 1875 (ex. 7404), had previously been part of 8Mig unit 2602. Unit formations are listed below:
8Dig unit no. | 4Cig unit | 4Big unit | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Unit no. | DTCsoL | MBSO | TSO | DTCsoL | Unit no. | DTCsoL | MBSO | TSRB | DTCsoL | |
2001 | 1875 | 76754 | 62417 | 71072 | 76850 | 2262 | 76779 | 62392 | 69333 | 76825 |
2002 | 1902 | 76100 | 62041 | 71768 | 76046 | 2254 | 76732 | 62379 | 69306 | 76803 |
2003 | 1801 | 76777 | 62415 | 71095 | 76848 | 2255 | 76740 | 62378 | 69310 | 76811 |
2004 | 1901 | 76082 | 62023 | 70701 | 76028 | 2259 | 76748 | 62386 | 69318 | 76819 |
The units were disbanded in 1996, after replacement by dedicated Class 319/2 units. The various 4Cig and 4Big units were reformed and gained their original numbers, except unit 1875, which was renumbered to 1802.
Two units had remained in service until 22 May 2010, 3Cig units nos. 1497 and 1498, which were used on the Lymington Branch Line. These two units were withdrawn from service on 22 May 2010 and replaced by Class 158 Diesel Multiple Units. Towards the end of their life, with the increasing use of newer trains which were equipped with sliding or plug doors, these trains were known commonly as "slam-door trains".[ citation needed ] 1497 is now preserved at The Mid Norfolk Railway and 1498 is now preserved on the Epping Ongar Railway. [3] The latter has had an extra carriage added to restore its original 4Cig formation.
After rail privatisation in the mid-1990s the different divisions of British Rail were divided up into different franchises. The three former SR division – South-Eastern, South Central and South-Western – all operated 4Cig units, and are dealt with separately here.
South Eastern Trains (SET) operated a small fleet of three 'Phase 1' and 22 'Phase 2' 4Cig units. The franchise was originally operated by Connex South Eastern.
All but one of the 'Phase 2' units continued to carry the obsolete Network SouthEast livery. One unit, no. 1870, was repainted into Connex South Eastern yellow and white. The three 'Phase 1' units were painted in white undercoat livery, since their use was originally only supposed to be short-term. However, despite this, the units remained in traffic for seven more years, from 1997 to 2004. They were popularly known as "Ghosts" by rail enthusiasts.
From 2003 units started to be withdrawn, having been replaced by the second batch of the new "Electrostar" units. The three 'Phase 1' units had gone by mid-2004. The final unit, no. 1843, lingered on for several months longer than its classmates, eventually being withdrawn in mid-November 2004. All the SET units have been scrapped.
The South Central Division inherited the largest fleet of 4Cig units. Originally this included all remaining 'Phase 1' units (though some were later transferred to South Eastern Trains), 35 'Phase 2' units, and the four 8Dig units. The remaining few 4Big units were also used on the former Central Division.
The South Central franchise was initially won by Connex South Central, which applied its yellow and white livery to most stock. In 2000 it lost the franchise to the Go-Ahead Group, which operated the franchise as South Central . In 2004 this was changed to Southern. Four 'Phase 1' units (nos. 1735/38/40, 1908) and eight 'Phase 2' units (nos. 1854/56-62) received Southern's new green livery.
In 1997 the remaining 4Big units were withdrawn. Eight were transferred to South West Trains. The remaining eleven unit were heavily rebuilt at Eastleigh Works, with compartments removed and opened out, and the buffet carriages withdrawn. The modified units were reclassified as Class 421/7 and renumbered into the 1401–1411 range. The units were also known as 3Cop units, which denoted their intended use, i.e. dedicated to East Coastway and West Coastway services out of Brighton. Two units received names – a rarity for slam-door EMU stock.
In 2004 some units were augmented to four carriages with the addition of a 'Phase 1' intermediate trailer, and thus became 4Cop units.
From 2003 Southern started to replace its slam-door fleet with new Class 377 Electrostar units. In general the 'Phase 1' units were withdrawn first due to their age, but as deliveries of the Electrostars increased some 'Phase 2' units were also taken out of service. By late 2004 only a handful of 'Phase 1' units and 4Cops remained in service. The final 'Phase 1' units in traffic were nos. 1704/08/11/12/14/17/43 and 1901, with the final unit, no. 1704, being withdrawn in February 2005. The final 4Cop units, nos. 1404/10/11, were withdrawn in March 2005.
The 'Phase 2' units lasted longer and two, nos. 1805 and 1866, were retained beyond August 2005, when slam-door trains lost all diagrammed work. They lasted until 19 November 2005, when they worked a farewell railtour, following which they were withdrawn.
South West Trains inherited a small fleet of twelve 'Phase 2' 4Cig units, and the larger fleet of 22 "Greyhound" units which had been modified to cut several minutes from journey times on the Portsmouth Direct line with its 1 in 80 gradients by adding a second stage of field weakening to improve performance at higher speeds (17% at 54 mph, 30% at 90 mph).
In 1997 the fleet was augmented with the addition of eight 4Big units from Connex South Central. These operated with the counter in the buffet carriages locked out of use. By 1999 these units had been stored, but then eight additional "Greyhound" units were converted from the redundant 4Bigs. The units were reclassified as Class 421/8, and renumbered in the range 1392–1399. The modifications included the removal of the buffet carriages, which were replaced by spare intermediate trailers from mechanically similar 4Cep units. Most of these trailers came from 4Cep units to make 3Cep units, but a few came from withdrawn units. These trailers were immediately recognisable since although they had the same body profile as the rest of the unit the windows were different and they had InterCity70[ jargon ] seating. The buffet carriages were withdrawn, although many were saved for preservation.
In December 2004 unit no. 1394 was reduced to a three-car unit with the removal of its Cep trailer. It was reclassified as Class 421/7, renumbered 1499, and dedicated to the Lymington Branch Line service, where it replaced the previous incumbent unit, no. 1198.
Withdrawals of units started in mid-2004, when many new Class 444 and Class 450 "Desiro" units became available for service. By the end of 2004 just a handful of units remained in traffic. The final few units were withdrawn in May 2005, with the last in traffic being 1304/09/12/16, 1392/95/96/97/98, 1499 and 1881/90. The final slam-door service ran on 26 May from London Waterloo to Bournemouth using units 1396, 1398 and 4Vep 3536. Following withdrawal two units, nos. 1304 and 1881, were transferred to "warm storage" for use by Southern if required. Most of the other units were sent for scrap, with the exception of nos. 1392 and 1499.
Services on the Lymington Branch Line were operated as a "heritage" operation using one of two refurbished 3Cig units, nos. 1497 and 1498. The two units were launched into service on 12 May 2005 having been repainted into heritage liveries, 1497 in blue and grey and 1498 in the green that the units carried when built. However, in May 2010, the new timetable changes saw the units replaced for more modern stock to save maintenance on a non-standard fleet of two units. As stated in the relevant timetable, "The slam door trains will be remembered with affection as they pass into history." The change took place on 22 May 2010 and the units have been replaced by a Class 158 on weekdays and a Class 450 Desiro at weekends. The class 421s have both been preserved due to historic significance.
Following withdrawal from normal service several vehicles have seen further use in departmental service.
Only two units have been preserved in addition numerous buffet cars from 4Big units have also been preserved. The full list is shown below, with complete units highlighted:
Former preserved CIGs include:
No Greyhound Units survive. No 8MIG or 8DIG units survive.
Unit Number (current in bold) | Type | Phase | DTCsoL | MBSO | TSO (*TSRB) | DTCsoL | Livery | Location | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
7032 | 2101 | 2251 | - | - | 4Big | Phase 1 | - | - | 69302* | - | Network SouthEast | Abbey View Disabled Centre | - |
7034 | 2110 | 2260 | - | - | 4Big | Phase 1 | - | - | 69304* | - | South West Trains | Northamptonshire Ironstone Railway Trust | stripped out |
7036 | 2104 | 2254 | 2002 | - | 4Big | Phase 1 | - | - | 69306* | - | BR(S) Green | Spa Valley Railway | Used as a static café as Tunbridge Wells West station. |
7040 | 2105 | 2255 | 2003 | - | 4Big | Phase 1 | - | - | 69310* | - | BR(S) Green | Dartmoor Railway | - |
7046 | 2108 | 2258 | - | - | 4Big | Phase 1 | - | - | 69316* | - | BR(S) Green | Riccarton Junction | Waverley Route heritage centre. |
7048 | 2109 | 2259 | 2004 | - | 4Big | Phase 1 | - | - | 69318* | - | BR(S) Green | Mid Norfolk Railway | - |
7051 | 2203 | - | - | - | 4Big | Phase 2 | - | - | 69332* | - | BR(S) Green | Swanage Railway | To be used as part of 4TC set,based at Swanage. |
7054 | 2206 | - | - | - | 4Big | Phase 2 | - | - | 69338* | - | Yellow and Green | Bahrain | Exported to Bahrain [10] |
7053 | 2205 | - | - | - | 4Big | Phase 2 | - | - | 69339* | - | BR(S) Green | Nemesis Rail - Burton on Trent, with 1753 | - |
7055 | 2207 | 2112 | 2262 | 2001 | 4Big | Phase 2 | - | - | 69333* | - | BR(S) Green | Lavender Line | - |
7057 | 2209 | - | - | - | 4Big | Phase 2 | - | - | 69335* | - | LNER Green/Cream | Wensleydale Railway | - |
7058 | 2210 | - | - | - | 4Big | Phase 2 | - | - | 69337* | - | BR Green | Hastings Diesels | Operates with preserved Class 201 unit 1001. |
7327 | 1127 | 1753 | - | - | 4Cig | Phase 1 | 76102 | 62043 | 70721 | 76048 | Connex | Finmere until January 2020 | Privately owned by Mr N D Bird, supported by the Network SouthEast Railway Society and named 'Chris Green' after the managing director of Network Southeast. Undergoing restoration work at Nemesis Rail, Burton-on-Trent. |
7373 | - | 1819 | 1306 | - | 4Cig | Phase 2 | - | - | 71041 | - | Green | Hever railway station | |
7337 | - | - | - | - | 4Cig | Phase 2 | - | 62287 | - | - | Network rail research livery | Derby | Now in Network Rail service as an ultrasonic test coach. [11] [12] |
7376 | 1276 | 2251 | 1394 | 1499 | 4Cig | Phase 2 | - | 62364 | - | - | South West Trains | Barrow Hill Engine Shed | [13] |
7396 | 1295 | 2258 | 1393 | - | 4Cig | Phase 2 | - | 62384 | - | - | Network rail research livery | Derby | Now in Network Rail service as an ultrasonic test coach. [14] [15] |
7397 | 1297 | 2256 | 1399 | - | 4Cig | Phase 2 | 76747 | - | - | - | BR Green | East Kent Railway (heritage) | [16] |
7397 | 1297 | 2256 | 1399 | - | 4Cig | Phase 2 | - | 62385 | - | - | South West Trains | East Kent Railway (heritage) | [17] |
7412 | 1212 | 1881 | - | - | 3Cig | Phase 2 | 76762 | - | - | - | Barrow Hill Engine Shed | [18] | |
7414 | 1214 | 1883 | 1497 | - | 4Cig | Phase 2 | 76764 | 62402 | - | 76835 | BR Blue/Grey | Spa Valley Railway | Formerly on the Lymington Branch Line. And is now preserved at the Spa Valley Railway and is once again is carrying passengers on selected days |
7417 | 1217 | 1884 | - | - | 4Cig | Phase 2 | - | - | 71085 | - | White / Art Design | Morden Wharf, Greenwich | Now out of use, in store. |
7423 | 1223 | 1888 | 1498 | - | 3Cig | Phase 2 | 76773 | 62411 | - | 76844 | BR Green | County Sligo, Ireland | Formerly on the Lymington Branch Line. In use on the Epping Ongar Railway until mid 2013. Now Sold for use at Camping site in Ireland |
Original-condition Units
Class | Type | No. built (Converted*) | Year built (Converted*) | No. range | Withdrawn | Notes |
---|---|---|---|---|---|---|
Class 420 | 4Big | 18 | 1965-66 | 7031-7048 | 1986 | Facelifted 1985-86, and renumbered as Class 422 units 2101-2112. |
10 | 1970 | 7049-7058 | 1988 | Facelifted 1986-88, and renumbered as Class 422 units 2201-2210. | ||
Class 421 | 4Cig | 36 | 1963-66 | 7301-7336 (later 1101-1136) | 1993 | Facelifted 1986-1993, and renumbered into 17xx range. |
102 | 1970-74 | 7337-7438 (later 1201-1300) | 1993 | Facelifted 1987-1993, and renumbered into 18xx and 13xx range. | ||
Class 421 | 8Mig | 2* | 1983* | 2601–2602 | 1983 | Converted back to standard 4Cig. |
Facelifted units
Class | Type | No. Converted | Year Converted | No. range | Operator | Units nos. | Withdrawn | No. preserved |
---|---|---|---|---|---|---|---|---|
Class 421/3 | 4Cig | 53 | 1986-93 | 1701–1754 | SET | 1701/42/48 | 06/2004 | 1 |
Southern | 1702-14/17/19-22/24-27/31/33-48/50-54 | 02/2005 | ||||||
Class 421/4 | 4Cig | 87 | 1987-93 | 1801–1826 1831-1891 | SET | 1806-1813/39-43/70-73/75-79 | 11/2004 | - |
Southern | 1801-1805/31-35/37/45-48/50/51/53-69/74 | 11/2005 | ||||||
SWT | 1880-1891 | 05/2005 | ||||||
Class 421/5 | 4Cig | 22 | 1990-92 | 1301–1322 | SWT | 1301-1322 | 05/2005 | - |
Class 421/6 | 4Cig | 8 | 1994 | 1901–1908 | Southern | 1901-1908 | 01/2005 | - |
Class 421/7 | 3Cop | 11 | 1997 | 1401–1411 | Southern | 1401-1411 | 03/2005 | - |
3Cig | 3 | 2004-05 | 1497–1499 | SWT | 1497-1499 | 05/2010 | 2 | |
Class 421/8 | 4Cig | 8 | 1999 | 1392–1399 | SWT | 1392-1399 | 05/2005 | - |
Class 422/0 | 8Dig | 4 | 1992 | 2001–2004 | South Central | 2001-2004 | 1996 | - |
Class 422/1 | 4Big | 10 | 1985-86 | 2101–2112 | BR | 2101-2112 | 1989 | - |
Class 422/2 | 4Big | 10 | 1986-88 | 2201–2210 | South Central | 2203-06/8-10 | 1997 | - |
Class 422/3 | 4Big | 12 | 1989 | 2251–2262 | South Central | 2251-62 | 1997 | - |
SWT | 2251/54-56/58/59/61/62 | 1999 | - | |||||
The British RailClass 411 (4CEP) electric multiple units were built at Eastleigh works from 1956–63 for the newly electrified main lines in Kent. These units, which used the British Railways Mark 1 bodyshell, were based on the earlier Southern Railway 4 COR design, built in 1937. Variants of the class 411 design included the class 410 and class 412 4 BEP units, which contained a buffet car in place of a standard trailer. They were later used on services in Sussex and Hampshire; following the privatisation of British Rail in 1995, the units were used by the Connex South Central, Connex South Eastern and South West Trains franchises. They were replaced by Juniper, Desiro, and Electrostar units. The fleet's lifespan was 49 years. These units are the longest-lived BR Mark 1 EMUs.
The British Rail Class 488 are unpowered trailer sets, converted from Mark 2F coaches for the Gatwick Express service from London Victoria to Gatwick Airport.
The British Rail Class 423, electric multiple unit passenger trains were mostly built by British Rail (BR) at York Works from 1967 to 1974, although the MBSOs and TSOs of the first 20, 7701-7720, were built at Derby Works. They have manually opening doors next to every seating row and were the last coaching stock built in this pattern for BR. They were mostly found working outer-suburban services in South London and rural services in Kent, Sussex and Hampshire, up to 2005 when they were finally replaced by Electrostar and Desiro units. The fleet had a working life of 38 years.
The British Rail Class 308 alternating current (AC) electric multiple units (EMU) were built by British Railways' Holgate Road carriage works in three batches between 1959 and 1961. They were initially classified as AM8 units before the introduction of TOPS.
Class 316 and Class 457 were TOPS classifications assigned to a single electric multiple unit (EMU) at different stages of its use as a prototype for the Networker series.
The British Rail TC multiple units were unpowered fixed formations of 3 or 4 carriages with a driving position at each end of the set, converted by BR's Holgate Road carriage works from locomotive-hauled Mark 1 carriages in 1966–1967 and 1974. The units built on experience gained from the prototype 6TC unit. In time the 3 car units were reformed into four car units to match the rest of the fleet and later classified as Class 442. This was later changed to Class 491, under which they spent the majority of their working lives. Shortly before withdrawal they were reclassified Class 438 and the units were renumbered to 8001-8034.
The Mark 2 family of railway carriages are British Rail's second design of carriages. They were built by British Rail workshops between 1964 and 1975 and were of steel construction.
The British Rail Mark 3 is a type of passenger carriage developed in response to growing competition from airlines and the car in the 1970s. A variant of the Mark 3 became the rolling stock for the High Speed Train (HST).
The British Rail Class 424 "Networker Classic" was a prototype electric multiple unit (EMU) built in 1997 by Adtranz at Derby Litchurch Lane Works from a Class 421 driving trailer vehicle.
The Southern Railway (SR) gave the designation 2-BIL to the DC third rail electric multiple units built during the 1930s to work long-distance semi-fast services on the newly electrified lines from London to Eastbourne, Portsmouth and Reading. This type of unit survived long enough in British Rail ownership to be allocated TOPS Class 401.
The British Rail Class 419 Motor Luggage Vans were battery electric multiple unit cars built from 1959-61 by BR at Eastleigh Works.
The British Rail Class 442 (5-WES) Wessex Electrics were electric multiple unit passenger trains introduced in 1988 by Network SouthEast on the South West Main Line from London Waterloo to Weymouth to coincide with the electrification of the line from Bournemouth. Twenty-four five-car units were built by British Rail Engineering Limited's Derby Litchurch Lane Works.
The British Rail Class 313 was a dual-voltage electric multiple unit (EMU) train built by British Rail Engineering Limited's Holgate Road carriage works between February 1976 and April 1977. They were the first production units that were derived from British Rail's 1971 prototype suburban EMU design which, as the BREL 1972 family, eventually encompassed 755 vehicles over five production classes. They were the first second-generation EMUs to be constructed for British Rail and the first British Rail units with both a pantograph for 25 kV 50 Hz AC overhead lines and contact shoe equipment for 750 V DC third rail supply. They were, additionally, the first units in Britain to employ multi-function automatic Tightlock couplers, which include electrical and pneumatic connections allowing the coupling and uncoupling of units to be performed unassisted by the driver whilst in the cab.
The British Rail Class 307 electric multiple units were built by BR at Eastleigh Works from 1954 to 1956. They were initially classified as AM7 before the introduction of TOPS.
The British RailClass 303 electric multiple units, also known as "Blue Train" units, were introduced in 1960 for the electrification of the North Clyde and the Cathcart Circle lines in Strathclyde. They were initially classified as AM3 units before the introduction of the TOPS classification system, and were the dominant EMU on the Glasgow suburban railway network for over 25 years before being progressively phased out by newer rolling stock. The final units were withdrawn from service in 2002. The fleet's lifespan was 42 years.
The British Rail Class 432 (4-REP) electric multiple unit passenger trains were built by BR at York Works from 1966 to 1967 and in 1974. The units were built to power the TC trailer units on services on the South West Main Line. Fifteen four-car units were eventually built. The motor coaches were new build, but the trailers were converted from Mk1 hauled stock. They were initially classified as Class 441 and numbered 3001–3015. This was later changed to Class 430, under which they spent the majority of their working lives. Shortly before withdrawal they were reclassified Class 432 and the units were renumbered as 2001–2015. The fleet had a lifespan of 26 years.
The British Rail Class 506 was a 3 carriage electric multiple unit (EMU) built for local services between Manchester, Glossop and Hadfield on the Woodhead Line, which was electrified in 1954 on the 1,500 V DC overhead system.
The British Rail Class 203, initially classified 6B, was a type of diesel-electric train. Seven units, numbered 1031-1037, were constructed in 1958 for use on the Southern Region. They were similar to the earlier Class 202 units, differing only in the substitution of a trailer buffet car for one of the three trailer second opens.
The British Rail Class 123 was a design of diesel multiple unit built for British Rail in 1963. They were the last first-generation DMUs built for British Railways and were built at Swindon Works. Ten of the four-car sets were built and introduced in 1963. The units bear a visible similarity to the British Rail Class 309; however, there is no 'relation' here as the two types were built by different manufacturers for different markets.
The Southern Railway (SR) and the British Railways used the designation Sub to cover a wide variety of electric multiple-unit passenger trains that were used on inner-suburban workings in the South London area. The designation 'Sub' was first officially used in 1941 to refer to newly built 4-car units. However, during the 1940s large numbers of earlier '3-Car Suburban Sets' were increased to four cars by the addition of an 'Augmentation' trailer, and became part of the 4-Sub category. The SR and BR (S) continued to build or else rebuild 4-car units to slightly different designs which became part of the 4-Sub Class. Many of these later examples survived in passenger use until late 1983, by which time British Rail had allocated to them TOPS Class 405.