The Signalling Record Society
ELR to RailRef Correlation - ELR Codes M
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Signal Fact 61
British Railways developed its automatic warning system (AWS) in the 1950s.
General introduction started towards the end of the decade.
Explanation of column content is here.
| ELR | BR-NR | Line Description | RailRef |
|---|---|---|---|
| MAB | yes | Willoughby - Mablethorpe - Louth | GN114 |
| MAC | Manvers Main Colliery Branch | HB012 | |
| MAC | yes | Manchester - Cleethorpes | GC360 GC170 GC130 |
| MAD | yes | Driffield - Malton | NE216 |
| MAE | yes | Maesycwmmer Junction - Fleur-de-Lis Junction | GW444 |
| MAH | yes | Harwich Town Branch | GE250 |
| MAI | yes | Maindee East Loop | GW482 |
| MAJ | yes | Manchester and Allerton Junction Line | CL050 CL060 |
| MAK | Kirkintilloch Branch | NB340 | |
| MAL | yes | Malmesbury Branch | GW116 GW121 |
| MAM | yes | Maltby Colliery Branch | SY004 |
| MAN | Mangotsfield South Loop. Now MAP. | ||
| MAN | yes | Manton Colliery Branch | GC173 GC172 |
| MAP | Mangotsfield Curve | MR345 | |
| MAR | yes | Marefield - Leicester | GN152 GN153 |
| MAS | yes | Manchester & Sheffield Line | MR452 |
| MAT | yes | Mold & Tryddan Branch | NW485 |
| MAU | Mauldslie Branch | CA145 | |
| MAV | yes | Alva Branch | NB601 |
| MAX | yes | Maxwelltown Branch | GS006 |
| MAY | Mayfield Branch | GS072 | |
| MBA | Marsh Barton Estate Branch | GW258 | |
| MBB | Musselburgh Branch | NB018 | |
| MBD | yes | Melton - Bottesford | GN150 |
| MBE | Marsh Barton Estate Branch. Now MBA. | ||
| MBE | yes | Moor Row & Birks Bridge | FN090 |
| MBH | Masham Branch | NE478 | |
| MBL | yes | Mangotsfield - Bath Line | MR344 |
| MBN | Masboro' North Curve | MR820 | |
| MBO | yes | Marlborough Branch | |
| MBW | yes | Middlesbrough - Whitby | GW182 GW183 |
| MBY | yes | Moss Bay Branch | CW011 CW012 CW013 |
| MCB | MR789 | ||
| MCC | Mansfield Colliery South | GC121c | |
| MCG | yes | Maryport - Carlisle Goods Lines | MC003 |
| MCH | yes | Macclesfield - Cheadle Hulme | NW748 |
| MCJ | yes | Marylebone - Claydon Line | GC001 GC002 GC011 GC020 GC022 |
| MCL | yes | Midland City Line | MR004 |
| MCO | Manners Branch | MR717 | |
| MCS | Margam Cripple and Holding Sidings | ||
| MCY | Mosside Branch | NB208 | |
| MDB | yes | Maryport Dock Branch | MC013 |
| MDC | Middlewood Curve | NW786 NW787 |
|
| MDE | yes | Mossend East Loop | CA081 |
| MDH | yes | Mold - Denbeigh | GC494 NW481 |
| MDI | Ditton Brook Iron Works Branch | ||
| MDL | yes | Manchester Diggle and Leeds Line | NW830 |
| MDN | yes | Mossend North Loop | CA060 |
| MDT | yes | Maiden Lane Depot | NW025 |
| MDW | yes | Mossend West Loop | CA273 |
| mdy | yes | Maerdy - Porth | TV033 |
| MDZ | Marsh Depot Goods Branch | GW152i | |
| MEB | yes | Moorgate Branch | MT060 GN009 |
| MED | yes | Mile End - Devonshire Street | GE005 |
| MEE | yes | Medbourne Branch | GN151 |
| MEG | Merthyr Goods Branch. Now MRG. | ||
| MEG | Marsh East Junction: Grimsby Line Curve | GC135 | |
| MEL | yes | Meon Valley Line | SW066 |
| MEN | yes | Muirhouse South Junction to Strathbungo Junction | CA304 CA301 CA302 |
| MEP | yes | Methley - Pontefract | LY350 |
| MER | yes | Merthyr Tydfil - Hirwan | GW463 |
| MEW | yes | Methly Junction - Whitwood Junction | NE151 LY350 |
| MEX | Merthyr Extension Line | NW272 | |
| MEY | yes | Eye - Mellis | GE285 |
| MEZ | Merthyr Low Level Loop | BM014 | |
| MFB | Fraserburgh Branch | GO015 | |
| MFD | yes | Mansfield Line | GC120 MR620 MR629 |
| MFN | Milfraen Branch | NW244 | |
| MGE | yes | Milngavie Branch | NB419 |
| MGS | Meikleriggs Branch | CA325 | |
| MGW | yes | Milford Junction - Gascoigne Wood Junction | NE181 |
| MGZ | Gilbertson's Branch | MR410c | |
| MHB | Hadfields Branch | GC343c | |
| MHE | Millerhill Junction to Millerhill Yard Junction Line | NB077 | |
| MHH | yes | Morecambe Junction - Heysham | MR913 |
| MHL | yes | Millerhill Lines | NB014 NB015 NB078 |
| MHS | yes | Mirehouse & Sellafield | FN070 |
| MHY | yes | Niddrie Curve | NB091 |
| MIA | yes | Manchester Airport Branch | NW745 |
| MIB | yes | Bervie Branch | NB572 NB573 |
| MID | Middleton Branch | LY008 | |
| MIH | yes | Huddersfield - Mirfield | MR872 |
| MII | yes | Mistley Incline | GE252 |
| MIK | Micklehurst Line | NW811 | |
| MIL | yes | Milford Haven Branch | GW674 |
| MIN | yes | Minehead Branch | GW239 |
| MIR | yes | Mersey Loop Line | MY002 MY001 |
| MIS | yes | Southampton West Docks Branch | SW102 |
| MIT | yes | Middleton Towers Branch | GE132 |
| MJB | yes | Bude Branch | SW153 SW154 |
| MJD | Marsh Junction Depot (Down Side) | GW152c | |
| MJI | yes | Madeley Junction to Ironbridge Line | GW801 GW804 |
| MJR | Morlais Junction to Rhydycar Junction | BM011 | |
| MJS | yes | Melbourne Junction and Sinfin Branch | MR202 MR203 MR164 |
| MJT | yes | Mansfield Junction to Trowell Junction Line | MR640 MR641 |
| MJU | Marsh Junction Depot (Up Side) | GW152f | |
| MJW | yes | Mitcham Junction - Wimbledon | LB026 LB028 |
| MKB | yes | MKB1 Cudworth West Curve MKB2 Barnsley (Monk Bretton) Branch |
MR843 MR842 |
| MKK | yes | Muirkirk Branch | GS040 |
| MKT | yes | Market Drayton - Wellington | GW811 |
| MLA | yes | Maryland East Curve | NB370 NB371 |
| MLD | yes | Mouldron Branch | CA064 |
| MLE | yes | Millerhill South Curve | NB079 |
| MLF | Monkland Fork | NB294 | |
| MLG | yes | Maillaig Line | NB466 NB467 |
| MLK | yes | Fife & Kinross Line | NB514 |
| MLL | yes | Moss Lane Junction - Lostock Hall Engine Shed Junction | LY220 |
| MLN | yes | Main Line | GW001 GW060 GW080 GW110 GW150 GW170 GW230 GW250 GW270 GW286 |
| MLP | Middlemuir Loop | NB344 | |
| MLS | Margam Loco and Sorting Sidings | ||
| MLT | yes | Moat Lane Junction & Talyllyn Line | CM030 |
| MLY | Millerhill Yard | ||
| MMB | yes | Mynydd Mawr Branch | LM001 |
| MMC | yes | Markham Main Colliery Branch | |
| MMH | Middlesbrough Marsh Line | NE513 NE514 NE517 NE515 |
|
| MML | Mynydd Mawr Loop | LM002 | |
| MMP | yes | March Motive Power Depot | GE083c |
| MMW | Moira West Junction to Shackerstone. Now AMS. | ||
| MMZ | Maes-y-Marchog Branch | NH003 | |
| MNB | Methven Branch | CA535 | |
| MNC | Monkton Main Colliery Branch | HB006c | |
| MNG | yes | Morningside Branch | NB220 |
| MNL | yes | Mid Nottingham Joint | MR623 |
| MOA | Mountain Ash deviation | TV010c | |
| MOB | yes | Moretonhampstead Branch | GW260 |
| MOD | yes | Chilmark MoD Branch | SW140c |
| MOF | Fortrose Branch | HR023 | |
| MOL | Motherwell Old Line | ||
| MON | Monkland Branch | ||
| MOO | Moorfields Goods Branch | MR391 | |
| MOR | yes | Felin Fran West - Swansea Loop East | GW594 |
| MOS | Mossend Branch | CA083 | |
| MOT | yes | Moffat Branch | CA034 |
| MOU | Mountain Branch/Crosshands Branch | GW642 | |
| MOW | yes | Mowbray Branch | FN092 |
| MPC | yes | Chessington Branch | SW013 |
| MPM | Moffat Mills Branch | NB255 | |
| MPR | yes | Miles Platting and Rochdale Line | LY001 LY003 LY006 |
| MPT | Merton Park to Tooting Line | LB026 | |
| MRB | yes | Milner Royd Junction - Bradford Exchange | LY300 |
| MRC | yes | Moor Row - Corkickle | FN050 |
| MRG | yes | Merthyr Goods Line | |
| MRH | yes | Marple Wharf Junction - Rose Hill, Marple | NS100 |
| MRJ | yes | Margam Moors Junction Line | |
| MRL | yes | Maryhill Line | NB169 NB410 NB416 |
| MSC | Masboro' South Curve | MR810 | |
| MSD | Manchester South District Railway | MR523 MR520 |
|
| MSG | yes | March - Spalding Line | JN020 |
| MSK | yes | Misk Branch | GS146 |
| MSL | yes | Birmingham Moor Street Station | GW730 |
| MSM | yes | Morecambe South Junction - Morecambe | NW893 |
| MSN | yes | Marston Branches | CL011 CL012 CL013 CL014 |
| MSR | Mossend Spur | CA272 | |
| MSS | yes | Mission Branch | GN274 |
| MST | Mosley Branch | MR218 | |
| MSV | Morriston Branch | MR411 | |
| MSW | yes | Minster Loop | SE091 |
| MSZ | yes | Moreton - Shipston (Gloucestershire) | GW693 |
| MTA | yes | Merthyr - Tredegar - Abergavenny Branch | NW240 |
| MTD | yes | Middleton Towers - Dereham | GE132 |
| MTE | yes | Menstrie Branch | NB601 |
| MTJ | Mickle Trafford Junctions | CL031 CL032 |
|
| MTL | yes | Methil Line MTL1 East of Fife Line MTL2 Buckhaven Branch |
NB539 NB530 |
| MTM | yes | Lockwood - Meltham | LY314 |
| MTN | yes | Morton Branch (Derbyshire) | MR753 |
| MTY | yes | Minsterley Branch | SP004 |
| MUP | yes | March Up & Down Yards | GE081f |
| MVB | yes | Manchester Victoria - Bury | LY060 LY065 |
| MVC | Manvers Main Colliery Branch | MR855 | |
| MVE | yes | Manchester Victoria - Euxton Junction via Bolton | LY080 LY110 |
| MVL | yes | Manchester Victoria and Huddersfield Line | LY030 NW810 NW814 NW820 NW825 |
| MVM | yes | Manchester Victoria - Miles Platting Junction | LY001 |
| MVN | yes | Manchester Victoria - Normanton | LY002 LY001 LY020 LY290 LY320 LY327 LY328 LY340 |
| MVR | yes | Manifold Valley Light Railway | NS029 |
| MVY | yes | Moss Valley Branch | GW864 |
| MVZ | Merthyr Vale Branch | QY002 | |
| MWA | Milton West Junction to Asfordby Junction | ||
| MWB | yes | Marlow Branch | GW073 |
| MWD | yes | Driffield - Market Weighton | NE214 |
| MWF | Mossend West Fork | CA082 | |
| MWJ | yes | Marchey House Junction - Winning Colliery Junction | NE712 |
| MWL | yes | March West Junction - Whitemoor Junction | GE083 |
| MWM | Middlesbrough West Marsh Line. See MMH | ||
| MWN | yes | Marsh West Junction - Grimsby Docks | GC134GC136 |
| MWT | Margam West Curve | ||
| MWY | yes | Mwyndy Branch | GW552 |
| MWZ | Monds Works Loop | ||
| MYD | Millerhill Junction to Millerhill Yard Junction Line | ||
| MYL | yes | Margam Yard Line | GW581 |
| MYO | yes | Mossend Down Yard | |
| MYP | yes | Mossend Up Yard | |
| MYS | Meadows Connecting Line | NB021 NB022 |
|
| MYT | yes | Maryport Elizabeth Dock Line | MC014 |
| MYW | Ministry of Works (Westerleigh East) Loop | GW122 |
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