View source for Standard Corridor

{{Short description|British mid-20th century railway carriage}}
{{no footnotes|date=July 2018}}
{{refimprove|date=July 2018}}
{{Use dmy dates|date=December 2017}}
{{Use British English|date=December 2017}}
{{Infobox train
| background       = #0033cc;color:white
| name             = British Rail Second Corridor
| image            = BR Mk1 SK.jpg
| imagesize        = 300px
| imagealt         = 
| caption          = A Mk1 Second Corridor (SK) coach at the North Norfolk Railway in 2007
| interiorimage    = 
| interiorimagealt = 
| interiorcaption  = 
| service          = 1951–present
| manufacturer     = BR Ashford/Easteigh, [[Derby Carriage and Wagon Works|Derby (C&W)]], Doncaster, [[Swindon Works|Swindon]], Wolverton, York, [[Birmingham Railway Carriage and Wagon Company|BRCW]], [[Cravens]], [[Gloucester Railway Carriage and Wagon Company|GRCW]], & [[Metro Cammell]]
| factory          = 
| family           = [[British Railways Mark 1]] and [[British Rail Mark 2|Mark 2A, 2B and 2C]]
| replaced         = 
| yearconstruction = ''Mk1'' 1951–1963<br>''XP64'' 1964<br>''Mk2a'' 1968<br>''Mk2b'' 1969<br>''Mk2c'' 1969-70
| yearservice      = 
| refurbishment    = 
| yearscrapped     = 
| numberbuilt      = 2168
| numberservice    = 
| numberpreserved  = 
| numberscrapped   = 
| fleetnumbers     = ''Mk1'' 24000–25507, 25510–26217<br>''XP64'' 25508-25509<br>''Mk2a'' 19452-19473<br>''Mk2b'' 19478-19513<br>''Mk2c'' 19515-19560
| capacity         = ''Mk1'' 48 with armrests<br>64 without<br>Mk2a/b/c 42
| operator         = [[British Rail]]
| depots           = 
| lines            =

| carbody          = 
| carlength        = {{convert|64|ft|6|in|m|2|abbr=on}}
| width            = {{convert|9|ft|3|in|m|2|abbr=on}}
| height           = {{convert|12|ft|9+1/2|in|m|2|abbr=on}}
| floorheight      = 
| platformheight   = 
| entrylevelorstep = 
| doors            = Manual slam doors, three on each side
| art-sections     = 
| maxspeed         = ''BR1:'' {{convert|90|mph|0|abbr=on}}<br>''B4/CW:'' {{convert|100|mph|0|abbr=on}}
| weight           = {{convert|32.5|to|36.5|LT|t ST|1}}
| aux              = 
| powersupply      = 
| hvac             = [[Steam generator (railroad)|Steam]] or [[Head end power#Electric Train Heat (ETH) and Electric Train Supply (ETS)|electric heat]], or both
| bogies           = BR1, Commonwealth or B4
| brakes           = [[Vacuum brake|Vacuum]], [[Railway air brake|air]], or [[Vacuum brake#Dual couplers|both]]
| coupling         = [[Railway coupling#Sets of carriages|Drop-head]] [[Janney coupler|knuckle coupler]] on [[Buffers and chain coupler|draw-hook]] ([[Railway coupling#Sets of carriages|dual]])
| gauge            = {{RailGauge|ussg|allk=on}}
}}

The '''Second Corridor''' (previously '''Third Corridor''') type of [[Passenger car (rail)|railway carriage]] was one of the standard mid-20th century designs, and was coded '''SK''' (previously '''TK''') by the LNER and BR, and '''CF''' by the LMS. The layout of the coach was a number of compartments, all of which were second class (known as third class until 1956), linked by a side [[Corridor (rail vehicle)|corridor]].

The [[British Railways Mark 1]] SK was the most numerous carriage design ever built in the United Kingdom. The original number series carried was 24000–26217. From 1983, those carriages in the 25xxx and 26xxx series were renumbered 18xxx and 19xxx.

There were two variants, those built for the Midland, Scottish, and Eastern / North Eastern regions had six seats per compartment, with fold-up arm-rests which folded into the seat-back, while those built for the Southern and Western regions, with their heavy commuter loadings into London, had eight seats in each compartment, and no arm-rests. Seating was of the interior sprung bench type.  Over time, some SKs and BSKs were re-allocated from other regions to the Western, who tended to try to stitch the arm-rests in the up position.{{clarify|date=July 2021|reason=Reads very anecdotally. Tended to try? Can we have some cited facts please?}}

In 1985, a number of [[British Rail Mark 2|Mark 2]] [[First Corridor]] carriages were declassified to become SKs. They were renumbered from 13xxx to 19xxx, putting them after the end of the Mark 1 range (19452–19560).

No carriages of this type are still in daily use on the main line network, since open saloon carriages are now preferred by operating companies. However, some electric [[multiple unit]]s based on [[British Rail Mark 1|Mark 1]] coaches have standard class compartments, such as {{brc|438}}. Many SKs still operate on preserved UK railway lines.

Designations for second corridor carriages are as follows:

{|class="wikitable"
!LNER Code
!Description
!LMS Code
|-
|BSK
|Brake Second Corridor
|CH
|-
|DMBSK
|Driving Motor Brake Second Corridor
|-
|DMSK
|Driving Motor Second Corridor
|-
|MBSK
|Motor Brake Second Corridor
|-
|SK
|Second Corridor
|CF
|-
|TBSK
|Trailer Brake Second Corridor
|-
|TSK
|Trailer Second Corridor
|}

==Livery==
In 1951 the initial livery for Mk1 coaches on British Railways was crimson lake and cream with black and gold lining, and all new Mk1 SK coaches were delivered in this livery up until 1956. In 1956 the standard livery changed to maroon with black and gold lining, except for the Southern region stock which adopted an unlined dark malachite green. Western Region adopted chocolate and cream on sufficient stock to operate its named trains such as the [[Cornish Riviera Express]] and the [[Torbay Express]]. In 1965 Manastral Blue & Grey livery was introduced as trailed on XP64 stock the year before and was the network standard for over 20 years. In the 1980s the NSE livery of white with blue at window level and red stripe under was introduced for stock in the south east of England.

==Orders==
{| class="wikitable sortable"
! Lot No. !! Diagram !! Mark !! Built !! Builder !! Qty !! Fleet numbers !! Notes
|-
| 30002 || 146 || 1 || 1951 || [[Derby Carriage and Wagon Works|Derby]] || 180 || 24000–24179 || BR1 bogies
|-
| 30015 || 146 || 1 || 1951-2 || [[Doncaster Works|Doncaster]] || 40 || 24180–24219 || BR1 bogies
|-
| 30026 || 146 || 1 || 1951-2 || [[Holgate Road carriage works, York|York]] || 82 || 24220–24301 || BR1 bogies
|-
| 30020 || 146 || 1 || 1952 || [[Ashford railway works|Ashford]] || 24 || 24302–24331|| BR1 bogies
|-
| 30007 || 146 || 1 || 1953 || [[Birmingham Railway Carriage and Wagon Company|BRCW]] || 36 || 24332–24396 || BR1 bogies
|-
| 30030 || 146 || 1 || 1953 || [[Derby Carriage and Wagon Works|Derby]] || 40 || 24397–24436|| BR1 bogies 
|-
| 30072 || 146 || 1 || 1953 || [[Wolverton railway works|Wolverton]] || 10 || 24437–24446 || BR1 bogies
|-
| 30088 || 146 || 1 || 1954 || [[Swindon Works|Swindon]] || 22 || 24447–24468 || BR1 bogies
|-
| 30070 || 146 || 1 || 1954 || [[Holgate Road carriage works, York|York]] || 36 || 24469–24538 || BR1 bogies
|-
| 30068 || 147 || 1 || 1952 || [[Holgate Road carriage works, York|York]] || 30 || 24539–24548 || BR1 bogies
|-
| 30070 || 146 || 1 || 1952 || [[Holgate Road carriage works, York|York]] || 8 || 24549-24556 || BR1 bogies
|-
| 30070 || 146 || 1 || 1954 || [[Holgate Road carriage works, York|York]] || 12 || 24557–24568 || BR1 bogies
|-
| 30070 || 146 || 1 || 1954-55 || [[Holgate Road carriage works, York|York]] || 7 || 24569-24575 || BR1 bogies
|-
| 30057 || 146 || 1 || 1953 || [[Birmingham Railway Carriage and Wagon Company|BRCW]] || 100 || 24576–24675 || BR1 bogies
|-
| 30058 || 146 || 1 || 1953 || [[Cravens]] || 25 || 24676–24700 || BR1 bogies
|-
| 30059 || 147 || 1 || 1953 || [[Cravens]] || 20 || 24701–24720 || BR1 bogies
|-
| 30073 || 146 || 1 || 1953 || [[Wolverton railway works|Wolverton]] || 25 || 24721–24745 || BR1 bogies
|-
| 30077 || 147 || 1 || 1954 || [[Swindon Works|Swindon]] || 8 || 24746–24753 || BR1 bogies
|-
| 30078 || 146 || 1 || 1954 || [[Swindon Works|Swindon]] || 42 || 24754–24795 || BR1 bogies
|-
| 30137 || 146 || 1 || 1954 || [[Birmingham Railway Carriage and Wagon Company|BRCW]] || 23 || 24796–24818 || BR1 bogies
|-
| 30153 || 146 || 1 || 1955-56 || [[Derby Carriage and Wagon Works|Derby]] || 126 || 24819–24944 || BR1 bogies
|-
| 30154 || 146 || 1 || 1956 || [[Derby Carriage and Wagon Works|Derby]] || 30 || 24945–24974 || BR1 bogies
|-
| 30208 || 146 || 1 || 1956 || [[Derby Carriage and Wagon Works|Derby]] || 70 || 24975–25044 || BR1 bogies
|-
| 30155 || 147 || 1 || 1955-56 || [[Wolverton railway works|Wolverton]] || 120 || 25045–25164 || BR1 bogies
|-
| 30230 || 147 || 1 || 1957 || [[Metro Cammell]] || 83 || 25165–25247 || BR1 bogies
|-
| 30231 || 146 || 1 || 1957-58 || [[Metro Cammell]] || 32 || 25248–25279 || BR1 bogies
|-
| 30494 || 150 || 1 || 1958 || [[Metro Cammell]] || 3 || 25280–25282 || BR1 bogies
|-
| 30349 || 146 || 1 || 1957 || [[Wolverton railway works|Wolverton]] || 120 || 25283–25402 || BR1 bogies
|-
| 30350 || 146 || 1 || 1957 || [[Wolverton railway works|Wolverton]] || 22 || 25403–25454 || BR1 bogies
|-
| 30356 || 148 || 1 || 1957 || [[Metro Cammell]] || 1 || 25455 || BR1 bogies
|-
| 30358 || 149 || 1 || 1957 || [[Gloucester Railway Carriage and Wagon Company|GRCW]] || 1 || 25456 || BR1 bogies
|-
| 30371 || 151 || 1 || 1957 || [[Doncaster Works|Doncaster]] || 1 || 25457 || BR1 bogies
|-
| 30374 || 146 || 1 || 1957 || [[Holgate Road carriage works, York|York]] || 50 || 25458-25507 || BR1 bogies
|-
| 30737 || 152 || XP64 || 1964 || [[Derby Carriage and Wagon Works|Derby]] || 2 || 25508-25509 || B4 bogies
|-
| 30426 || 146 || 1 || 1957-58 || [[Wolverton railway works|Wolverton]] || 146 || 25558-25703 || BR1 bogies
|-
| 30685 || 146 || 1 || 1961-62 || [[Derby Carriage and Wagon Works|Derby]] || 202 || 25704-25905 || CW bogies
|-
| 30685 || 146 || 1 || 1962 || [[Derby Carriage and Wagon Works|Derby]] || 67 || 25906-25972 || BR1 bogies
|-
| 30719 || 146 || 1 || 1962 || [[Derby Carriage and Wagon Works|Derby]] || 87 || 25973-26059 || CW bogies
|-
| 30720 || 147 || 1 || 1962-63 || [[Derby Carriage and Wagon Works|Derby]] || 78 || 26060-26137 || CW bogies
|-
| 30726 || 146 || 1 || 1962-63 || [[Holgate Road carriage works, York|York]] || 80 || 26138-26217 || CW bogies
|-
|}

==Conversions==
* In 1973-74 4 '''Second Corridor''' were converted to [[British Rail Class 309|Class 309]] '''TSK''' later become '''TSOL''' 
* In 1976, 9 '''Second Corridor''' were converted to '''Stowage Vans''' 80431-80439 '''POT'''
* In 1977, 15 '''Second Corridor''' were converted to '''Sorting Vans''' 80381-80395 '''POS'''.

{|class="wikitable"
! SK !! TSK !! Diagram !!
|-
| 26024 || 71110 || 469 || [[British Rail Class 309|Class 309]]
|-
| 26189 || 71108 || 469 || [[British Rail Class 309|Class 309]]
|-
| 26196 || 71109 || 469 || [[British Rail Class 309|Class 309]]
|-
| 26203 || 71107 || 469 || [[British Rail Class 309|Class 309]]
|}

{|class="wikitable"
! SK !! Type !!  !! Year !! Diagram 
|-
| 25033 || POS || 80383 || 1977 || 726A/NS531
|-
| 25045 || POS || 80387 || 1977 || 726A/NT531
|-
| 25047 || POS || 80390 || 1977 || 726A/NT531
|-
| 25056 || POS || 80395 || 1977 || 726A/NT531
|-
| 25068 || POT || 80437 || 1976 || 727A/NT521
|-
| 25071 || POT || 80432 || 1976 || 727A/NS521
|-
| 25077 || POT || 80436 || 1976 || 727A/NS521
|-
| 25078 || POS || 80384 || 1977 || 726A/NS531
|-
| 25082 || POS || 80392 || 1977 || 726A/NS531
|-
| 25083 || POS || 80385 || 1977 || 726A/NS531
|-
| 25088 || POS || 80388 || 1977 || 726A/NS531
|-
| 25089 || POS || 80391 || 1977 || 726A/NS531
|-
| 25099 || POS || 80386 || 1977 || 726A/NS531
|-
| 25103 || POS || 80389 || 1977 || 726A/NS531
|-
| 25104 || POT || 80431 || 1976 || 727A/NS521
|-
| 25109 || POS || 80382 || 1977 || 726A/NS531
|-
| 25112 || POS || 80381 || 1977 || 726A/NS531
|-
| 25117 || POT || 80435 || 1976 || 727A/NT521
|-
| 25119 || POS || 80393 || 1977 || 726A/NT531
|-
| 25127 || POT || 80439 || 1976 || 726A/NT521
|-
| 25434 || POT || 80434 || 1976 || 726A/NT521
|-
| 25139 || POT || 80438 || 1976 || 727A/NT521
|-
| 25150 || POT || 80433 || 1976 || 727A/NT521
|-
| 25156 || POS || 80394 || 1977 || 726A/NT531
|}

===Departmental use===

{|class="wikitable"
! colspan=4|Mk1
|-
! SK !! !! Departmental !! Notes
|-
| 24011 || || DB975415 || Match wagon for ballast cleaner
|-
| 24026 || || ADB977057 || Doncester works test train
|-
| 24035 || || ADB975439 || Crewe works test train
|-
| 24062 || || LDB975062 || CM&EE Electrification staff coach
|-
| 24067 || || LDB975064 || CM&EE Electrification staff coach
|-
| 24070 || || ADB975161 || BTU tool van
|-
| 24085 || || TDB977187 || Train crew training coach
|-
| 24119 || || ZDB975074 || Exhibition coach
|-
| 24134 || || LDB975065 || CM&EE Electrification staff coach
|-
| 24140 || || LDB975066 || CM&EE Electrification staff coach
|-
| 24147 || || ZDB975073 || Exhibition coach
|-
| 24154 || || ADB975263 || Overhead Line Maintenance Stores coach
|-
| 24157 || || ADB975162 || BUT Tool & Generator coach
|-
| 24168 || || LDB975067 || CM&EE Electrification staff coach
|-
| 24189 || || LDB975068 || CM&EE Electrification staff coach
|-
| 24274 || || ADB975801 || CCE staff & dormitory coach for ballast cleaner
|-
| 24308 || || DB975392 || Match wagon for ballast cleaner DR76216
|-
| 24320 || || LDB975069 || CM&EE Electrification staff coach
|-
| 24345 || || ADB975806 || CCE staff coach
|-
| 24410 || || LDB975070 || CM&EE Electrification staff coach
|-
| 24420 || || KDB975114 || S&T cable flat
|-
| 24428 || || ADB977058 || Doncester works test train
|-
| 24429 || || ADB975904 || Overhead Line Maintenance cable flat
|-
| 24430 || || TDB977188 || Train crew training coach
|-
| 24457 || || ADB975799 || CCE staff & dormitory coach for ballast cleaner
|-
| 24485 || || DB975412 || Match wagon for ballast cleaner
|-
| 24516 || || TDB977189 || Train crew training coach
|-
| 24531 || || ADB975726 || Overhead Line Maintenance generator & stores coach
|-
| 24579 || || ADB977090 || CCE staff coach
|-
| 24589 || || ADB975546 || Overhead Line Maintenance cable flat
|-
| 24647 || || TDB975135 || Lecture coach
|-
| 24677 || || TDB977247 || MOD special instruction coach
|-
| 24679 || || TDB977248 || MOD special instruction coach
|-
| 24685 || || TDB977422 || Special instruction coach
|-
| 24745 || || KDB975106 || S&T cable flat
|-
| 24752 || || ADB975440 || Crewe works test train
|-
| 24766 || || ADB975732 || Overhead Line Maintenance stores & roof access coach
|-
| 24796 || || ADB975802 || CCE staff & dormitory coach for ballast cleaner 
|-
| 24815 || || ADB975803 || CCE staff & dormitory coach for ballast cleaner  
|-
| 24841 || || TDB977497 || Special instruction coach
|-
| 24849 || || ADB975925 || Overhead Line Maintenance cable flat
|-
| 24857 || || TDB977498 || Special instruction coach
|-
| 24858 || || ADB977059 || Doncester works test train
|-
| 24870 || || ADB975441 || Crewe works test train
|-
| 24890 || || TDB977430 || Special instruction coach
|-
| 24899 || || CDB977103 || EMU barrier coach
|-
| 24936 || || ADB975442 || Crewe works test train
|-
| 24972 || || ADB975805 || CCE staff & dormitory coach for single line gantries 
|-
| 24976 || || DB975828 || Underframes used for CCE staff & dormitory portakabin
|-
| 24982 || || DB975379 || CCE staff & dormitory coach
|-
| 24990 || || ADB975926 || Overhead Line Maintenance cable flat
|-
| 24994 || || ADB975915 || Overhead Line Maintenance cable flat
|-
| 25003 || || ADB975913 || Overhead Line Maintenance cable flat
|-
| 25017 || || ADB975742 || Overhead Line Maintenance office & staff coach
|-
| 25025 || || ADB975920 || Overhead Line Maintenance cable flat
|-
| 25026 || || ADB975922 || Overhead Line Maintenance cable flat
|-
| 25038 || || ADB977320 || Crewe works diesel loco test train coach
|-
| 25069 || || ADB975924 || Overhead Line Maintenance cable flat
|-
| 25079 || || ADB975080 || BTU tool van 
|-
| 25094 || || ADB975908 || Overhead Line Maintenance cable flat
|-
| 25105 || || ADB975905 || Overhead Line Maintenance cable flat
|-
| 25106 || 18106 || ADB977322 || Crewe works diesel loco test train coach
|-
| 25122 || || ADB975443 || Crewe works test train
|-
| 25132 || || ADB975797 || CCE staff & dormitory coach for ballast cleaner  
|-
| 25161 || || ADB975906 || Overhead Line Maintenance cable flat
|-
| 25171 || || TDB977195 || MOD special instruction coach
|-
| 25190 || || ADB975736 || Overhead Line Maintenance stores & roof access coach
|-
| 25196 || || ADB975927 || Overhead Line Maintenance cable flat
|-
| 25205 || || ADB975930 || Overhead Line Maintenance cable flat
|-
| 25222 || || ADB975622 || EMU Barrier coach
|-
| 25226 || || ADB975722 || Overhead Line Maintenance generator & stores coach
|-
| 25236 || || CDB977102 || EMU barrier coach
|-
| 25238 || || ADB975923 || Overhead Line Maintenance cable flat
|-
| 25243 || || ADB975946 || Overhead Line Maintenance cable flat
|-
| 25262 || || ADB975712 || Overhead Line Maintenance stores coach
|-
| 25281 || || DB975816 || Underframes used for CCE staff & dormitory portakabin
|-
| 25286 || 18286 || TDB977496 || Special instruction coach
|-
| 25302 || || ADB975771 || Overhead Line Maintenance office & staff coach
|-
| 25318 || 18318 || ADB977323 || Crewe works diesel loco test train coach
|-
| 25326 || || ADB977319 || Crewe works diesel loco test train coach
|-
| 25329 || || DB975829 || Underframes used for CCE staff & dormitory portakabin
|-
| 25338 || || TDB977173 || Train crew training coach
|-
| 25339 || || ADB977151 || Crewe work test tain
|-
| 25340 || || ADB975903 || Overhead Line Maintenance cable flat 
|-
| 25343 || || ADB975798 || CCE staff & dormitory coach for ballast cleaner  
|-
| 25353 || || ADB975763 || Overhead Line Maintenance generator & stores coach
|-
| 25356 || 18356 || ADB977321 || Crewe works diesel loco test train coach
|-
| 25358 || || ADB975743 || Overhead Line Maintenance office & staff coach
|-
| 25388 || || ADB975723 || Overhead Line Maintenance generator & stores coach
|-
| 25396 || || TDB977174 || Train crew training coach
|-
| 25407 || 18407 || TDB977407 || MOD special instruction coach
|-
| 25412 || 18412 || TDB977584 || Special instruction coach
|-
| 25420 || || ADB975713 || Overhead Line Maintenance stores coach
|-
| 25422 || 18422 || TDB977499 || Special instruction coach
|-
| 25429 || || DB975817 || Underframes used for CCE staff & dormitory portakabin
|-
| 25430 || || ADB975758 || Overhead Line Maintenance stores coach
|-
| 25434 || || ADB975711 || Overhead Line Maintenance stores coach
|-
| 25437 || || ADB975762 || Overhead Line Maintenance generator & stores coach
|-
| 25440 || || ADB975744 || Overhead Line Maintenance office & staff coach
|-
| 25461 || || ADB975767 || Overhead Line Maintenance stores & roof access coach
|-
| 25466 || || ADB975714 || Overhead Line Maintenance stores coach
|-
| 25477 || || ADB975766 || Overhead Line Maintenance stores & roof access coach
|-
| 25479 || || ADB975738 || Overhead Line Maintenance stores & roof access coach
|-
| 25480 || || DB975825 || Underframes used for CCE staff & dormitory portakabin
|-
| 25493 || || DB975822 || Underframes used for CCE staff & dormitory portakabin
|-
| 25494 || || TDB977237 || MOD special instruction coach
|-
| 25495 || || ADB975759 || Overhead Line Maintenance stores coach
|-
| 25497 || || DB975830 || Underframes used for CCE staff & dormitory portakabin
|-
| 25498 || || ADB975947 || Overhead Line Maintenance cable flat
|-
| 25507 || || ADB975800 || CCE staff & dormitory coach for ballast cleaner  
|-
| 25567 || || TDB977129 || MOD Special instruction coaches
|-
| 25570 || 18570 || TDB977408 || MOD spechal instruction coach
|-
| 25600 || || ADB975721 || Overhead Line Maintenance generator & stores coach
|-
| 25602 || 18602 || DB977724 || CE staff & tool coach
|-
| 25623 || || CDB977100 || EMU barrier coach
|-
| 25664 || || ADB975741 || Overhead Line Maintenance office & staff coach
|-
| 25666 || || ADB975444 || Crewe works test train
|-
| 25667 || || DB975824 || Underframes used for CCE staff & dormitory portakabin
|-
| 25669 || || DB975821 || Underframes used for CCE staff & dormitory portakabin
|-
| 25695 || || ADB975734 || Overhead Line Maintenance stores & roof access coach
|-
| 25696 || || ADB975804 || CCE staff & dormitory coach for ballast cleaner 
|-
| 25699 || || DB975823 || Underframes used for CCE staff & dormitory portakabin
|-
| 25729 || 18729 || ADB977982 || Brake Force Runner
|-
| 25735 || 18735 || TDB977653 || Special instruction coach
|-
| 25755 || 18755 || TDB977419 || Special instruction coach
|-
| 25764 || || ADB975731 || Overhead Line Maintenance stores & roof access coach
|-
| 25807 || 18807 || TDB977420 || Special instruction coach
|-
| 25811 || 18811 || TDB977514 || Driver training coach
|-
| 25831 || 18831 || TDB977458 || Driver training coach
|-
| 25840 || 18840 || TDB977459 || Driver training coach
|-
| 25846 || 18846 || TDB977515 || Driver training coach
|-
| 25852 || 18852 || TDB977429 || Special instruction coach
|-
| 25859 || 18859 || TDB977428 || Special instruction coach
|-
| 25860 || 18860 || TDB977516 || Driver training coach
|-
| 25878 || 18878 || TDB977517 || Driver training coach
|-
| 25884 || 18884 || TDB977460 || Driver training coach
|-
| 25885 || 18885 || TDB977461 || Driver training coach
|-
| 25953 || || ADB975866 || EMU barrier coach 
|-
| 25973 || 18973 || TDB977462 || Driver training coach
|-
| 25985 || 18985 || TDB977463 || Driver training coach
|-
| 26002 || 19002 || TDB977464 || Driver training coach
|-
| 26010 || 19010 || TDB977465 || Driver training coach
|-
| 26020 || 19020 || TDB977512 || Driver training coach
|-
! colspan=4|Mk2a
|-
! FK !! SK !! Departmental !! Notes
|-
| 13458 || 19458 || RDB977914 || Test Train coach
|-
| 13462 || 19465 || 6352 || Mk4 Barrier coach
|-
| 13466 || 19466 || TDB977662 || MOD Special instruction coach
|-
! colspan=4|Mk2b
|-
! FK !! SK !! Departmental !! Notes
|-
| 13476 || 19476 || RDB977525 || Brake force runner
|-
| 13478 || 19478 || 6353 || Mk4 Barrier coach
|-
| 13481 || 19481 || RDB977530 || Brake force runner
|-
| 13484 || 19484 || RDB977528 || Brake force runner
|-
| 13485 || 19485 || TDB977663 || MOD Special instruction coach
|-
| 13487 || 19487 || RDB977529 || Brake force runner
|-
| 13491 || 19491 || TDB977661 || MOD Special instruction coach
|-
| 13501 || 19501 || TDB977656 || MOD Special instruction coach
|-
| 13505 || 19505 || TDB977654 || MOD Special instruction coach
|-
| 13511 || 19511 || TDB977660 || MOD Special instruction coach
|-
! colspan=4|Mk2c
|-
! FK !! SK !! Departmental !! Notes
|-
| 13518 || 19518 || TDB977659 || MOD Special instruction coach
|-
| 13531 || 19531 || TDB977658 || MOD Special instruction coach
|-
| 13557 || 19557 || TDB977655 || MOD Special instruction coach
|}

==Corridor Brake Standard/Second==
A second corridor coach with a guard's brake compartment is designated BSK. The Mark 1 BSKs had 4 compartments, built as two variants with or without arm-rests depending on region, as with the SKs.

==See also==
* [[Corridor coach]]

== References ==

{{Reflist}}

* Keith Parkin ''Locomotive Hauled Mark 1 Coaching Stock of British Railways'' The Historical Model Railway Society, {{ISBN|9780902835061}}
* British Railways Vehicle Diagram Book 200 for Loco Hauld Coaches http://www.barrowmoremrg.co.uk/BRBDocuments/CS/Book_No_200_EK_web.pdf
* Michael Harris ''British Rail Mark 2 Coaches - the design that launched InterCity'' [http://www.mdsbooks.co.uk/detail.html?this=aaVPL48 Venture Publications]{{dead link|date=May 2018 |bot=InternetArchiveBot |fix-attempted=yes }} {{ISBN|978-1-898432-48-7}}
* Ashley Butlin ''British Rail Coaching Fleet Mk2, Mk3 & Mk4'' A British Railways Illustrated Modern Times Series, Irwell Press {{ISBN|1-871608-87-2}}
* G.M.Kichenside ''British Railways Coaches 1958'' Ian Allan ABC
* P Mallaband & L J Bowles ''Coaching Stock of British Railways 1976'' Railway Correspondence and Travel Society
* P Mallaband & L J Bowles ''Coaching Stock of British Railways 1978'' Railway Correspondence and Travel Society, {{ISBN|9780901115447}}
* P Mallaband & L J Bowles ''Coaching Stock of British Railways 1982'' Railway Correspondence and Travel Society
* Departmental Coaching Stock DB97xxxx series 1983 Edition, Lineside Publications
* Peter Fox ''Departmental Coaching Stock First Edition 1984'' Platform 5 Publications, {{ISBN|9780906579473}}
* Roger Butcher & Peter Fox ''Departmental Coaching Stock Second Edition 1985'' Platform 5 Publications, {{ISBN|9780906579473}}
* Roger Butcher & Peter Fox ''Departmental Coaching Stock Third Edition 1987'' Platform 5 Publications, {{ISBN|9780906579701}}
* Roger Butcher, Peter Fox & Peter Hall ''Departmental Coaching Stock Fourth Edition 1990 '' Platform 5 Publications, {{ISBN|9780906579978}}
* Roger Butcher ''Departmental Coaching Stock Fifth Edition 1993'' SCT Publications, {{ISBN|9781872768106}}

{{British Rail Coaches}}

[[Category:British Rail coaching stock]]