Last update 28 November 2023
Please select a starting letter from the links below:
| ELR | Line name | Mileages | Datum | Notes |
|---|---|---|---|---|
| GAA | Glasgow Airport Rail Link | 0.00 - 1.20 | Branch junction | Never built |
| GAC | Gateside Colliery Branch | 0.00 - 0.20 | Gateside Box | Between Cambuslang and Newton |
| GAE | Gaer Branch | 159.32 - 160.24 | Paddington via Stroud | |
| GAL | Garnkirk Lines | 0.00 - 1.35 | Sighthill East Junction | |
| GAM | Gartness Branch (LMS) | 8.69 - 10.12 | Rutherglen East Junction | Gartness Junction to Gartness Colliery |
| GAN | Gartness Branch (LNE) | 0.00 - 1.11 | Clarkston | Clarkston to Gartness Colliery |
| GAR | Garndiffaith Branch | 0.00 - 0.19 | Garndiffaith Junction | |
| GAV | Gartverrie Branch | ?? - ?? | Coatbridge, Gartgill | |
| GAW | Garw Branch | see separate portions | ||
| GAW1 | Ynysawdre Junction to Brynmenyn Junction | 0.24 - 0.55 | Tondu Middle Junction | |
| GAW2 | Brynmenyn Junction to Blaengarw | 0.00 - 5.74 | Brynmenyn Junction | |
| GBA | Glasgow Barrhead and Kilmarnock Line | 0.00 - 0.61 | Gorbals Junction | |
| GBB | Great Bridge Branch | 135.03 - 136.47 | Paddington via Didcot | |
| GBK | Glasgow Barrhead and Kilmarnock Line | 1.19 - 23.49 | Gorbals Junction | |
| GBL | Gowdall and Braithwell Line | 0.00 - 21.29 | Aire Junction | |
| GBN | Guide Bridge East Curve | 0.00 - 0.43 | Dukinfield Junction | |
| GBR | Grindford Bar Branch | 0.00 - 0.20 ?? | Grindford Bar Siding | Between Blackrod and Adlington |
| GBS | Guide Bridge Sidings | see separate portions | ||
| GBS1 | Brookside Sidings | -0.05 - 0.46 | Guide Bridge West Junction | |
| GBS2 | Avenue Sidings | 0.21 - 0.46 | Guide Bridge West Junction | |
| GBZ | Gravel Bridge Loop | 0.00 - 0.12 | Burry Port Dock Junction | |
| GCB | Glapwell Colliery Branch | 0.00 - 0.46 | Glapwell Colliery Sidings Junction | |
| GCC | Garsfield and Chopwell Colliery Branch (Derwenthaugh) | ?? - ?? | Derwenthaugh Railway, became National Coal Board property | |
| GCD | Great Chesterford Siding | 45.60 - 45.75 | Liverpool Street via Clapton | |
| GCG | Glencraig Colliery to Glencraig Junction | 0.00 - 1.17 | Glencraig Junction | |
| GCH | Grange Court and Hereford Line | Now GCT | ||
| GCH | Guildford Peasmarsh Junction to Christ's Hospital Stammerham Junction Line | Now CPJ | ||
| GCL | Glasgow Central Line | 107.23 - 109.37 | Carlisle? | |
| GCM | Great Central Main Line | 46.72 - 56.16 | Manchester | |
| GCT | Grange Court and Hereford Line | 121.37 - 144.05 | Paddington via Stroud | 143.02 - 144.05 now 52.19 - 51.15 ex Shrewsbury in SHL |
| GCZ | Greyfield Colliery Branch | 0.00 - 1.19 | Clutton | |
| GDB | Glenesk Junction to Dalkeith Branch | 7.63 - 8.23 | Edinburgh Waverley | |
| GDK | Garvel Dock Branch | 0.00 - 1.34 | Garvel Dock Branch Junction | |
| GDL | Goole Docks Line | 0.00 - 1.00 | Mineral Junction | Now WAG3 |
| GDW | Glossop to Dinting West Junction Curve Branch | 0.00 - 1.05 | Glossop | |
| GEC | Greenford East Curve | 8.44 - 8.70 | Paddington via West Ealing | |
| GEH | Gelderd Road Junction and Holbeck Line (Leeds) | 184.22 - 185.01 | Kings Cross | Possibly same as DOL4 |
| GEL | Gelligroes Loop | 0.00 - 0.22 | Gelligroes Junction | |
| GEN | Genwen Branch | 0.53 - 1.40 | Llandilo Junction | |
| GES | GEC Siding: Stafford No 4 | 132.50 - 133.33 | Euston | |
| GFB | Gas Factory Junction to Bow Junction Curve | 2.57 - 3.28 | Fenchurch Street | |
| GFD | Glenfield Branch | 0.00 - 0.22 | Glenfield Works Siding | |
| GFF | Griff Branch | 0.00 - 1.50 | Griff Junction | |
| GFG | Gollanfield to Fort George Branch | 0.14 - 1.60 | Gollanfield | |
| GFR | Gleniffer Branch | 0.00 - 0.65 | Thornly Park Junction | |
| GGE | Gorgie Loop (Gorgie Junction to Haymarket West Junction) | 0.00 - 0.41 | Gorgie Junction | |
| GGG | Gorgie Goods Branch | 0.00 - 0.43 | Gorgie Junction | |
| GGN | Gilgarran Branch | 0.00 - 7.32 | Ullock Junction | |
| GGR | Garngaber Branch | 0.00 - 1.25 | Garngaber Junction | |
| GGZ | Gwaun-Cae-Gurwen Loop | 0.00 - 0.15 | Gwaun-Cae-Gurwen | Never opened |
| GHB | Gatehead and Hurlford Branch | 0.00 - 3.69 | Thirdpart Junction | |
| GHD | (Gloucester) High Orchard and Docks Branch | 94.00 - 94.21 | Derby | |
| GHE | Gartsherrie South Junction to Gartcosh Junction Curve | 95.63 - 97.06 | Carlisle via Ravenscraig No 1 | |
| GHL | Greenhill Curve | 0.00 - 0.59 | Greenhill Upper Junction | |
| GHM | Goole High Level Mineral Line | 0.24 - 0.73 | Also listed as -0.15 - 0.60 | |
| GHO | High Orchard Branch | 93.23 - 94.12 | Derby | |
| GHS | Great Howard Street Goods Branch | 35.62 - 36.25 | Manchester Victoria | |
| GHT | Gravel Hill Branch | 0.00 - ≈1.58 | Junction with TRE | |
| GIB | Gildersome Branch | 180.11 - 190.29 | Kings Cross | |
| GIF | Giffen Branch | see separate portions | ||
| GIF1 | Lugton Loop to Lugton Junction Official sources quote Lugton to Barrmill Junction in error | 0.00 - 0.19 | Lugton loop | |
| GIF2 | Lugton Junction to Barrmill Junction Official sources quote Barrmill Junction to Giffen Junction in error | 0.00 - 2.70 | Lugton Junction | |
| GIF3 | Barrmill Junction to Kilbirnie Junction Official sources quote Giffen Junction to Kilbirnie Junction in error | 0.00 - 0.79 | Barrmill Junction | |
| GIF4 | Kilbirnie Junction to Giffen naval base | 0.00 - 0.27 | Kilbirnie Junction | |
| GIL | Gilfach Branch | 0.00 - 2.08 | Hendreforgan Junction | |
| GIR | Girvan Junction to Girvan Depot | 61.60 - 62.24 | Bridge Street Station via Dalry | |
| GJB | Grove Junction to Birchden Junction Line | see separate portions | ||
| GJB1 | Birchden Junction to Groombridge Junction | 27.75 - 28.60 | Brighton | |
| GJB2 | Groombridge Junction to Grove Junction | 46.22 - 50.40 | London Bridge via Rowfant | |
| GJC | Gannow Junction and Colne Branch | 21.03 - 27.41 | Farington Curve Junction | |
| GJH | Gretna Branch | 0.00 - 3.18 | Longtown Junction | |
| GKB | Gask Branch | 0.00 - 1.17 | Gask Junction | |
| GLA | Glascoed ROF Branch | Now GRF | ||
| GLA | Gaerwen Llangwyllog and Amlwch Branch | 0.00 - 17.54 | Gaerwen Junction | |
| GLB | Glasson Branch | 0.00 - 5.16 | Lancaster Junction | |
| GLD | Gloucester Llanthony Docks Branch | 0.00 - 1.21 | Gloucester Docks Junction | |
| GLK | Glengarnock Works Branch | 0.00 - 0.35 + sidings | Glengarnock Junction | |
| GLL | Glasgow Lines | 0.00 - 4.40 | Dalmarnock Junction | |
| GLM | Glovers Mill Sidings (Killamarsh) | 0.01 - 0.75 | Killamarsh North Junction | On LDEC Beighton branch |
| GLN | Garliestown Branch | 15.12 - 16.29 | Newton Stewart Junction | |
| GLT | Green Lane Junction and Tyne Dock Line | 0.56 - 2.18 | Boldon Colliery Junction | |
| GLY | Gainsborough Lower Yard | 98.09 - 98.30 | Huntingdon South Junction via St Ives (reverse) | |
| GMC | Greater Manchester Council Branch (Woodley) | 39.16 - 40.14 | Liverpool Central | |
| GMH | Grangemouth Branch | 0.00 - 5.34 | Grangemouth Junction | |
| GMJ | Garriongill and Morningside Junction Branch | 0.00 - 1.55 | Garriongill Junction | = CTS, before remiling |
| GMS | Grantham Metals Sidings | 104.72 - 105.64 | Kings Cross | |
| GNB | Glenochil Branch (Menstrie & Glenochil) | ≈0.74 - ≈2.28 | Cambus | From MTE. Glenochil Colliery south of Menstrie to Alva line. Line opened 27 August 1956, colliery closed June 1962 |
| GNE | Gunnie Yard Branch | 7.49 - 8.43 | High Street via Sunnyside Junction (reverse) | |
| GNN | Greenburn Opencast Line | 0.00 - 2.13 | New Greenburn Junction | |
| GNQ | Gobowen and Nantmawr Quarry Branch | see separate portions | ||
| GNQ1 | Gobowen to Oswestry milepost change | 0.00 - 2.19 | Oswestry Branch Junction | |
| GNQ2 | Tanat Valley Branch from Llynclys Junction | 0.00 - 2.25 | Llynclys Junction | |
| GNQ3 | Llanymynech to Nantmawr Quarry | 0.00 - 3.74 | Llanymynech South Junction | |
| GNQ4 | Whitchurch - Buttington Junction | 0.00 - 31.23 | Whitchurch, Cambrian Junction | Includes WBJ |
| GNQ5 | Tanat Valley Branch (part) | 2.44 - 15.76 | Llynclys Junction | |
| GNT | Garnant Branch | 10.02 - 16.49 | Llandeilo Junction | |
| GNW | Glapwell New Colliery Branch | 0.00 - 1.01 | Glapwell New Colliery Junction | |
| GNY | Gloucester New Yards | see separate portions | ||
| GNY1 | Off SWM2 | 113.12 - 113.49 | Paddington via Stroud | |
| GNY2 | Off CHL | 92.35 - 92.77 | Derby | |
| GOB | Gulf Oil Refinery Branch | 0.00 - 2.35 + sidings | Gulf Oil Branch Junction | |
| GOC | Goldthorpe Colliery Branch | 15.17 - 16.79 | Burton Salmon | |
| GOJ | Gospel Oak to Junction Road Junction Line | 0.00 - 0.58 | Gospel Oak Junction | |
| GOJZ | Gospel Oak Junction | 0.00 - 0.04 | Gospel Oak Junction | Not in GEOGIS but present in a structure maintenance system |
| GOO | Goonbarrow Branch | 287.40 - 290.48 | Paddington via Box and Plymouth Millbay (reverse) | |
| GOR | Goole Oakhill Junction to Rawcliffe Bridge Junction | 72.26 - 73.62 | Manchester Victoria via Rochdale and Wakefield Kirkgate | |
| GOT | Gotham Branch | 0.00 - 2.31 | Gotham Branch Junction | DD-DD-DD-DD Batman |
| GOU | Gourock Line | see separate portions | ||
| GOU1 | Wallneuk Junction to Stoney Brae | 6.34 - 6.53 | Bridge Street Junction | |
| GOU2 | Stoney Brae to Gourock | 107.70 - 126.58 | Carlisle via Motherwell, Larkfield Junction and Terminus Junctions | |
| GOV | Govan Docks Branch | 2.01 - 2.78 | Bridge Street | |
| GPP | Greenock Princes Pier Line | 16.70 - 24.55 | Glasgow Bridge Street | |
| GPV | Grain to Port Victoria Line | 38.24 - 39.51 | Charing Cross via Dartford Loop | |
| GRA | Grahamston Branch | 0.00 - 0.43 | Falkirk Junction | |
| GRB | Grange Branch | 0.00 - 1.24 | Grange Junction | |
| GRC | Grimethorpe Colliery Branch | see separate portions | ||
| GRC1 | Dearne Valley to mileage change | 0.00 - 0.30 | Dearne Valley North Junction | |
| GRC2 | Mileage change to Grimethorpe | 55.77 - 58.31 | Manchester Victoria | |
| GRD | Greetland Junction to Dryclough Junction Curve | 0.00 - 1.11 | Dryclough Junction | |
| GRE | Graham Road Curve | 2.55 - 2.79 | Liverpool Street | |
| GRF | Glascoed ROF Branch | 27.21 - 27.52 | Ross-on-Wye via Glascoed Junction (reverse direction and count) | Formerly GLA |
| GRG | Guildford and Reading Line | see separate portions | ||
| GRG1 | Guildford to Ash Junction | 30.28 - 35.50 | Waterloo | Now GTW1 |
| GRG2 | Ash Junction to Reading | 48.34 - 68.68 | Charing Cross via Redhill | 48.34 - 61.74 now part of GTW2. 61.74 - 68.68 now part of RDG2 |
| GRM | Granton Branch (LMS) | 100.05 - 103.46 | Carlisle via Carstairs (reverse) | |
| GRN | Granton Branch (LNE) | 2.25 - 4.18 | Edinburgh Waverley | |
| GRO | Grougar Branch | ?? - ?? | East Ayrshire area | |
| GRS | Grantham and Skegness Line | see separate portions | ||
| GRS1 | Barkston South Junction to 112MP | 109.56 - 112.00 | Kings Cross via Grantham | |
| GRS2 | 112MP to Boston Sleaford Line Junction | 112.00 - 137.06 | Kings Cross via Grantham | |
| GRS3 | Boston Sleaford Line Junction to Firsby East Junction | 106.70 - 122.22 | Kings Cross via Spalding | |
| GRS4 | Firsby East Junction to Skegness | 0.26 - 9.17 | Firsby North Junction | |
| GRW | Griffin Wharf Branch | 0.00 - 0.77/ 67.65 - 68.40 | Halifax Junction/ Liverpool Street | |
| GRZ | Grafton Curve | 68.49 - 69.12 | Paddington | |
| GSB | Guild Street Branch | 10.27 - 11.08 | Derby | |
| GSD | Grangetown Shell Depot | 19.35 - 19.68 | Darlington | |
| GSE | Goole and Selby Extension Line | 0.00 - 1.03 | Boothferry Road Junction | |
| GSF | Glenburnie Junction to St Fort (North Fife) Branch | 0.00 - 12.15 | St Fort North Junction | Newburgh - Wormit |
| GSG | Gresty Road Salop Goods | 0.00 - 0.37 | Gresty Lane Junction | |
| GSJ | Galton Junction to Stourbridge Junction (Galton Branch and Stourbridge Extn Line) | see separate portions | ||
| GSJ1 | Galton Junction to Smethwick West Junction | 3.64 - 4.08 | Birmingham New Street | |
| GSJ2 | Smethwick West Junction to Stourbridge North Junction | 133.32 - 141.06 | Paddington via Oxford | |
| GSL | Gosforth Loop | 0.00 - 0.37 | Gosforth East Junction | |
| GSM | Kettering North Junction and Melton Mowbray Line | see separate portions | ||
| GSM1 | Kettering North Junction to Manton Junction | 73.73 - 90.24 | St Pancras via Corby | |
| GSM2 | Manton Junction to Melton Junction | 90.24 - 105.70 | St Pancras via Corby | |
| GSM3 | Syston South Junction to Melton Junction | 103.72 - 113.36 | St Pancras via Leicester | |
| GSM4 | Melton Junction to Nottingham | 105.70 - 123.07 | St Pancras via Corby | |
| GSM5 | Asfordby | 107.17 - 108.34 | St Pancras via Corby | |
| GSM6 | Asfordby North Chord | 107.19 - 107.44 | St Pancras via Corby and Asfordby North Junction (reverse) | |
| GSMZ | Asfordby Junction to Asfordby Business Park | 106.58 - 108.00 | St Pancras via Corby | Not in GEOGIS but present in a structure maintenance system |
| GSR | Grassmoor Branch | 143.56 - 147.32 | St Pancras | |
| GST | Gilmilnscroft Branch | 0.00 - 1.78 | Gilmilnscroft Branch Junction | |
| GSW | Glasgow and South Western Line | 33.44 - 116.13 | Bridge Street Station via Dalry | |
| GTB | General Terminus Branch (GSW) | 1.19 - 1.69 | St Enoch | |
| GTN | London Road Junction to Bonnington South Line | 1.03 - 2.25 | Edinburgh Waverley | = part WAV |
| GTP | Gorton Junction to Throstle Nest South Junction Line | see separate portions | ||
| GTP1 | Gorton Junction to Hyde Road Junction (Gorton Curve) | 0.00 - 0.49 | Gorton Junction | |
| GTP2 | Fairfield Junction to Chorlton Junction | 0.00 - 6.33 | Fairfield Junction | |
| GTP3 | Throstle Nest East Junction to Chorlton Junction | 1.41 - 3.44 | Manchester Central | |
| GTP4 | Trafford Park East Junction to Throstle Nest South Junction | 31.65 - 32.33 | Liverpool Central | |
| GTS | Terminus Junction to General Terminus | 101.62 - 102.42 | Carlisle | |
| GTW | Guildford to Wokingham Line | see separate portions | ||
| GTW1 | Guildford to Ash Junction | 30.35 - 35.50 | Waterloo via Worpleston and Guildford (reverse) | |
| GTW2 | Ash Junction to Wokingham | 48.34 - 61.72 | Charing Cross via Redhill | |
| GTY | Gloucester TYard |
113.17 - 113.40 | Paddington via Stroud | Now part of GNY1 |
| GUA | Grendon Underwood to Ashendon Junction | 159.10 - 165.21 | Manchester | 164.70 - 165.21 = 34.07 - 33.56 on NAJ2 |
| GUB | Guisborough to Brotton Line | 8.79 - 15.13 | Guisborough Junction | |
| GUD | Aberdeen Guild Street Freight Branch | 0.00 - 0.30 | Guild Street Goods | |
| GUE | Guiseley Branch | see separate portions | ||
| GUE1 | Guiseley Station Junction to Esholt Junction | 204.32 - 205.07 | St Pancras via Cudworth | |
| GUE2 | Esholt Junction to Dockfield Junction | 0.00 - 3.38 | Esholt Junction | |
| GUH | Guisborough Branch | 5.30 - 9.49 | Guisborough Junction | |
| GUY | Yeadon Branch | 0.00 - 1.23 | Rawdon Junction | |
| GVA | Geneva Loop | 0.00 - 0.34 | Snipe House Junction | |
| GVB | Golden Valley Branch | 0.00 - 18.52 | Pontrilas | |
| GWA | Gwaun-Cae-Gurwen Branch | 14.59 - 17.02 | Llandeilo Junction | |
| GWB | North Greenwich Branch | 2.73 - 4.42 | Fenchurch Street | |
| GWE | Gwendraeth Valley Branch | 0.00 - 2.15 | Mileage change 6ch East of Kidwelly Junction | |
| GWJ | Greetwell East Junction to Washingborough Junction Line | 136.10 - 137.10 | Kings Cross via Boston | |
| GWL | Goodwick & Letterston Branch | Paddington via Stroud | Duplicates part of NPF | |
| GWR | Gaswater Branch | 0.00 - 1.21 | Gaswater Branch Junction | |
| GXO | Glaxo Branch/Bardsea Branch | 0.00 - 2.40 | Plumpton Junction |