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;0F;1F;2F;3F;4F;5F;6F;7F;8F;9F;0P;1P;2P;3P;4P;5P;6P;7P;8P;9P;0MT;1MT;2MT;3MT;4MT;5MT;6MT;7MT;8MT;9MT:The British Railways system of classifying steam locomotives by power using a number from 0, least powerful, to 9, most powerful, followed by either F for freight, P for Passenger or MT for Mixed Traffic.;32xx:A GWR 2251 Class 0-6-0 engine;36xx:A GWR5700 Class 0-6-0PT engine;55xx:Great Western RailwayA GWR 4575 Class 2-6-2T engine;LMS56xx:London Midland & Scottish RailwayA GWR 5600 Class 0-6-2T engine;LNER57xx:London & North Eastern RailwayA GWR 5700 Class 0-6-0PT engine;SR74xx:Southern RailwayA GWR 7400 Class 0-6-0PT engine;NERA.J.Hill:North Alfred John Hill, Chief Mechanical Engineer (CME) of the Great Eastern Railway1912-1922;GNRANPR:Automatic Number Plate Recognition;Armstrong:Joseph Armstrong, Locomotive, Carriage and Wagon Superintendent of the Great Northern Western Railway1864-1877;LNWRARPS:London & North Western Association of RailwayPreservation Societies;ATC:Automatic Train Control, a form of limited cab signalling developed by the GWR in 1906, superseded by BR's Automatic Warning System ;LB&SCRAtlantic:London Brighton & South Coast Locomotive with a 4-4-0 wheel configuration;Austin:John Austin GRA, renowned Bridgnorth-based railway artist and Fellow of The Guild of RailwayArtists;SE&CRAWS:South Eastern & Chatham RailwayAutomatic Warning System, a form of limited cab signalling introduced in 1956
;B&MR:Brecon & Merthyr Tydfil Junction Railway
;Barry:Woodham Brothers Scrapyard, Barry, South Wales. The source of many locomotives now in preservation.
;Beames:Hewitt Pearson Montague Beames, Chief Mechanical Engineer (CME) of the London and North Western Railway 1920-1922.
;Billinton:Lawson Billinton, Locomotive Engineer of the London, Brighton and South Coast Railway 1912-1923
;Blue Star:An electro-magnetic form of multiple working equipment widely used by BR in first generation diesel locomotives and multiple units whereby multiple like-coded vehicles are capable of running under the control of one driver. A blue star coupling code is normally indicated on the front of the vehicle.
;BoT:Board of Trade
;B.R.
;BR:British Rail or British Railways
;B.R.C.W
;BRC&W
;BRCW:Birmingham Railway Carriage & Wagon Company
;SVRBRC:Severn Valley Buckinghamshire RailwayCentre;PWBRUTE:Permanent WayBritish Railways Utility Trolley Equipment, a wire caged trolley with a low floor developed by BR to replace existing luggage trucks and mail bag trolleys.;S&TBSC:Signals & TelegraphBritish Steel Corporation, or British Sugar Corporation;MPDBulleid:Motive Power DepotOliver Vaughan Snell Bulleid, Chief Mechanical Engineer (CME) of the Southern Railway 1937-1948
;C&W:Carriage & Wagon
;CBS:Community Benefit Society, a charitable body
;CBILS:Coronavirus Business Interruption Loan Scheme, a government backed loan scheme
;CFPS:Class 40 Preservation Society
;Ch:Chain. 22 yards or 1/80th of a mile
;chain
;chains:As a unit of measurement, 22 yards or 1/80th of a mile
;Churchward:George Jackson Churchward, Chief Mechanical Engineer (CME) of the Great Western Railway 1902-1922
;Clark:T. F. Clark, Chief Mechanical Engineer (CME) of the Metropolitan Railway
;CME:Chief Mechanical Engineer
;CNC:Computer Numerical Control. A computer converts the design produced by Computer Aided Design software into numbers which are used to control the movement of the cutter.
;Collett:Charles Benjamin Collett, Chief Mechanical Engineer (CME) of the Great Western Railway 1922-1941
;Commonwealth bogie
;Commonwealth bogies:BR's standard carriage bogie from 1955 to 1963, originally designed by the Commonwealth Steel Company (US) and manufactured under licence in the UK. A heavyweight cast steel bogie incorporating sealed roller bearings and coiled suspension to give a superior ride quality and a speed rating of 100mph.
;Composite:Carriage having more than one class of seating, ie First and Third or latterly First and Standard.
;Conflat:GWR telegraphic code signifying a flat wagon for containers
;CWR:Continuous Welded Rail, where joints between lengths of rail are welded rather than connected by fishplates.
;DCMS:The Department for Digital, Culture, Media & Sport (Department for Culture, Media and Sport until 2017)
;Dean:William Dean, Chief Locomotive Engineer of the Great Western Railway 1877-1902
;Departmental:Rolling stock used for the railway’s own functions (engineering etc.) rather than for general passenger or goods traffic.
;DMBS:Driving Motor Brake Second
;DMCL:Driving Motor Composite with lavatory
;DMU:Diesel Multiple Unit
;Down:In reference to the direction of travel means away from the major terminus (i.e. towards Bridgnorth on the present day SVR)
;Drott:Drott Manufacturing Company machine similar to a bulldozer used to level and compact soil
;Drummond:Dugald Drummond, Locomotive Engineer, later Chief Mechanical Engineer (CME) of the London & South Western Railway 1895-1905
;DTCL:Driving Trailer Composite with lavatory
;Dukedog:A GWR 9000 Class 4-4-0 engine, rebuilt using earlier 3300 Class 'Bulldog' frame and 3252 Class 'Duke' boiler.
;ECS:Empty Coaching Stock
;EE
;E.E.:English Electric
;ELR:Engineer's Line Reference, East Lancashire Railway
;E.M.D.:Electro-Motive Diesel, Inc., an American manufacturer of diesel-electric locomotives.
;ESMP :Engineering Services, Motive Power.
;ETH:Electric Train Heating
;ETT:Electric Train Token
;BulleidEWS:Oliver Vaughan Snell BulleidEnglish, Welsh & Scottish Railway, a rail freight company;F.P.L;FPL:Facing Point Lock, equipment that physically locks points so that they cannot move.;Fairburn:Charles Edward Fairburn, Chief Mechanical Engineer (CME) of the Southern London, Midland and Scottish Railway 1944-1945;FE:Footplate Experience;Fowler:Henry Fowler, Chief Mechanical Engineer (CME) of the Midland Railway 1909-1923, and of the London, Midland and Scottish Railway 1923-1933;GBRf: GB Railfreight, a main line rail freight operating company.;GCR:Great Central Railway;GER:Great Eastern Railway;GNR:Great Northern Railway;GNS;GNSR:Great North of Scotland Railway;GPO:General Post Office;GRC&W;GRCW:Gloucester Railway Carriage and Wagon Company;Gresley:Sir Nigel Gresley, Chief Mechanical Engineer (CME) of the London & North Eastern Railway between 1937 1923-1941;GUV:General Utility Van, formerly used to transport mail and 1948parcels;GWR:Great Western Railway;GWS:Great Western Society;GWSR:Gloucestershire Warwickshire Steam Railway (Commonly known as the Gloucestershire Warwickshire Railway);GW(SVR)A:Great Western (SVR) Association;Hawksworth:Frederick Hawksworth, Chief Mechanical Engineer (CME) of the Great Western Railway between 1941 -1948;headstock;headstocks:The underframe member across each end of a wagon carrying the buffers and 1948coupling. Known as the Bufferbeam on a locomotive.;HLF:Heritage Lottery Fund (National Lottery Heritage Fund from 2019);CollettHolden:Charles Benjamin CollettStephen Dewar Holden, Chief Mechanical Engineer (CME) of the Great Western Eastern Railway between 1922 1908-1912;Hot box:A situation that occurs when an axle bearing overheats, causing damage to the axle box and 1941the axle itself.;HRA:Heritage Railway Association;Instanter:A type of three link chain coupling with a special triangular-shaped middle link which provides sufficient slack for coupling, but when rotated through 90 degrees shortens the length of the chain, reducing the slack without the need to wind a screw.;Internal User:Rolling stock used for the railway’s internal purposes (stores etc.) at one fixed location.;IOMR:Isle of Man Railway;ChurchwardIvatt:Henry George Jackson ChurchwardIvatt, Chief Mechanical Engineer (CME) of the London, Midland and Scottish Railway 1946-1948. CME of BR (London Midland Region) 1948-1951;Johnson:Samuel Waite Johnson, Chief Mechanical Engineer (CME) of the Midland Railway 1873-1903;Keruing: (Trade name) A type of medium hardwood timber obtained from trees of the genus Dipterocarpus;LBSCR;LB&SCR:London Brighton & South Coast Railway;LCGB:Locomotive Club of Great Britain;lever lead;lever leads:The (usually brass) information panel on a point or signal lever informing the signalman which other levers need to be pulled to release that lever;LIP;L.I.P.:Locomotive Inspection Point;LMS:London Midland & Scottish Railway;LNER:London & North Eastern Railway;LNWR:London & North Western Railway;Loriot:GWR telegraphic code signifying a machine truck;L.P.O.:Lost Property Office;LRO:Light Railway Order;LSWR:London & South Western Railway between 1902 ;Macaw:GWR telegraphic code signifying a timber truck;Maunsell:Richard Maunsell, Chief Mechanical Engineer (CME) of the South Eastern and Chatham Railway from 1913-1923, and 1922of the Southern Railway 1923-1937.;StanierMcIntosh:William StanierJohn Farquharson McIntosh, Chief Mechanical Engineer (CME) of the LondonCaledonian Railway 1895-1914;MEWP;MEWPs:Mobile elevating work platform;Mica:GWR telegraphic code signifying a meat van;Mink:GWR telegraphic code signifying a covered goods van;Mogo:GWR telegraphic code signifying a covered motor car wagon;Mogul:Locomotive with a 2-6-0 wheel configuration;Morton:A type of brakes used on GWR wagons after Grouping in 1923, replacing the earlier DC (Dean Churchward) types.;MOSI:Museum Of Science & Industry;MPD:Motive Power Depot;MR:Midland and Scottish Railway berween 1932 and 1944;0FMSC:Manchester Ship Canal;1FM.S.C.:Manpower Services Commission;2FM&SWJR:Midland & South West Junction Railway;3FNBI:Notice Board Issue. The SVR's on-line method of circulating information to working members.;4FNCB:National Coal Board;5FNER:North Eastern Railway;6FNHMF:Trustees of the National Heritage Memorial Fund – see HLF;7FNR:Network Rail;8FNRM:The Railway Museum, formerly the National Railway Museum;9FORR:Office of Rail and Road, formerly Office of Rail Regulation, the independent safety and economic regulator for Britain's railways which includes HM Railway Inspectorate;0POS:Ordnance Survey;1POTMR:On-Train Monitoring Recorder, a device similar in principle to the flight data recorder found on aircraft;2POW&W;3POWW:Oxford Worcester and Wolverhampton Railway;4PP.W.;5PP.Way;6PPW:Permanent Way;7PPacific:Locomotive with a 4-6-2 wheel configuration;8PPrairie:Locomotive with a 2-6-2 wheel configuration;9PPRISM:The Preservation of Industrial and Scientific Material (PRISM) Fund, a source of funding from the Arts Council/The Museums, Libraries and Archives Council.;0MTPTR:Port Talbot Railway & Docks Company;1MTR&H;2MTRuston:Ruston and Hornsby Ltd. of Lincoln, engineer and locomotive manufacturer acquired by English Electric in 1966. Also, Ruston-Bucyrus Ltd established in 1930 and jointly owned by Ruston and Hornsby and Bucyrus-Erie (US) ;3MTRailtrack:private sector owner of the national railway system from 1994 until 2002, created as part of the privatisation of British Rail. Succeeded by Network Rail;4MTRaven:Sir Vincent Litchfield Raven, Chief Mechanical Engineer (CME) of the North Eastern Railway 1910-1922;5MTRCE:Regional Civil Engineer(ing);6MTRCH:Railway Clearing House ;7MTRexine:an early form of vinyl used by the LNER for wall coverings in teak coaches;8MTRHDR:Romney, Hythe and Dymchurch Railway;9MTRichard Deeley:Chief Mechanical Engineer (CME) of the Midland Railway 1904-1909;Riddles:The Robert Arthur "Robin" Riddles, Member of the Railway Executive for Mechanical and Electrical Engineering responsible for the design of the British Rail Standard Class locomotives;RNAD:Royal Naval Armaments Depot;S&DJR:Somerset & Dorset Joint Railway, jointly operated by the London and South Western and Midland Railways system (later Southern and London Midland and Scottish Railways) ;S&HR:Shrewsbury and Hereford Railway;S&T:Signals & Telegraph;Sambron:Sambron SA, a French manufacturer of classifying locomotives telehandler-type forklifts used by power using the SVR for coaling;SE&CR;SECR:South Eastern and Chatham Railway;Siphon:GWR telegraphic code signifying a milk van;SLOA:Steam Locomotive Operators Association, formed in 1975 to bring together and assist operators wishing to run steam on the main line;SMS:Safety Management System;Snake:GWR telegraphic code signifying a number passenger brake van;solebar;solebars:The outer member of a vehicle's underframe, running from end to end below the body;SR:Southern Railway;Stanier:William Stanier, Chief Mechanical Engineer (CME) of the London, Midland and Scottish Railway 1932-1944;Super D:An LNWR 0-8-0goods engine;SURCC:Shropshire Union Railway & Canal Company;SVR:Severn Valley Railway;SVRA:Severn Valley Railway Association;SVRS:Severn Valley Railway Society;TBSL:Trailer Brake Second with lavatory;Telford Steam Railway;TSR:Telford Horsehay Steam Trust Limited, least powerfula Charitable heritage railway located at Horsehay, Telford with proposals for running heritage trains into the Ironbridge Gorge and onto the former GWR Severn Valley branch.;TMD:Traction Maintenance Depot, also referred to 9as Diesel Depot;Toad:GWR telegraphic code signifying a goods brake van, most powerfulwhich became the standard design's nickname;Toadfit:Telegraphic code signifying a vacuum brake fitted brake van;TOPS:Total Operations Processing System, followed an American computer system adopted by either F BR from the late 1960s to number and manage rolling stock.;TPO:Travelling Post Office;TSL:Trailer Second with lavatory;TUCC:Transport Users Consultative Committee;Type 1:The British Railways classification for diesel locomotives of up to 1000 bhp;Type 2:The British Railways classification for diesel locomotives of 1001 bhp to 1499 bhp;Type 3:The British Railways classification for diesel locomotives of 1500 bhp to 1999 bhp;Type 4:The British Railways classification for freight, P diesel locomotives of 2000 bhp to 2999 bhp;Type 5:The British Railways classification for Passenger diesel locomotives of 3000 bhp or MT for Mixed Trafficmore;UIC:Union Internationale des Chemins de fer (International Union of Railways);Up:In reference to the direction of travel means towards the major terminus (i.e. towards Kidderminster on the present day SVR);Urie:Robert Urie, Chief Mechanical Engineer (CME) of the London and South Western Railway 1912-1922;USATC:United States Army Transportation Corps;VSOE:Venice Simplon Orient Express;Wainwright:Harry Smith Wainwright, Locomotive, Carriage and Wagon Superintendent of the South Eastern and Chatham Railway 1899-1913;Warwell:Telegraphic code signifying an ex War Department Well Trolley;WCR:West Coast Railways;Webb:Francis Webb, Locomotive Superintendant/Chief Mechanical Engineer (CME) of the London and North Western Railway 1871-1903;Weltrol:Telegraphic code signifying a Well Trolley;Whale: George Whale, Chief Mechanical Engineer (CME) of the London and North Western Railway 1903-1909;Worsdell: Thomas William Worsdell, Chief Mechanical Engineer (CME) of the Great Eastern Railway 1881-1885 and North Eastern Railway 1885-1890;WLA: Western Locomotive Association Ltd.;WMSP:West Midlands Safari Park;WTT: Working Timetable