# List of road junctions in the United Kingdom: M

* 0–A
* B
* C
* D
* E
* F
* G
* H
* I–K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U–V
* W
* X–Z
This is part of the list of road junctions in the United Kingdom.
Many road junctions are named after pubs. For more information regarding the derivation of pub names see pub names.

## M

| Junction Name | Type | Location | Roads | Grid Reference | Notes |
| Magic Roundabout aka The Plough Roundabout | Roundabout | Hemel Hempstead | | 51°44′46″N 00°28′23″W / 51.74611°N 0.47306°W / 51.74611; -0.47306 |
| The Magic Roundabout | Roundabout | Cheddar, Somerset | A371 B3135 unclass. | 51°17′15″N 2°47′25″W﻿ / ﻿51.28750°N 2.79028°W﻿ / 51.28750; -2.79028 | |
| The Magic Roundabout formerly County Islands | Magic Roundabout | Swindon | A4289 (shown on some maps as A4259) A4259 (for A4312) Fleming Way Shrivenham Road | 51°33′46″N 1°46′18″W﻿ / ﻿51.56278°N 1.77167°W﻿ / 51.56278; -1.77167 | |
| Malden Junction | | New Malden, Royal Borough of Kingston | A3 Malden Way A2043 Malden Road | 51°23′40″N 0°15′14″W﻿ / ﻿51.39444°N 0.25389°W﻿ / 51.39444; -0.25389 | |
| Manadon Junction | Roundabout Interchange | Plymouth | unclass. St Peters Road, N A386 Tavistock Road, NE A38 The Parkway, E / W B3250 Mannamead Road, S A386 Outland Road, SW | 50°24′02″N 4°08′09″W﻿ / ﻿50.4006°N 4.1357°W﻿ / 50.4006; -4.1357﻿ (Manadon Junction) | |
| Mandale Interchange | | Middlesbrough, North Yorkshire | A19 A1032 A1130 | 54°32′56″N 1°16′28″W﻿ / ﻿54.54889°N 1.27444°W﻿ / 54.54889; -1.27444 | |
| Manor Circus | | North Sheen, LB Richmond | A316 Lower Mortlake Road A316 Lower Richmond Road B353 Manor Road B353 Sandycombe Road | 51°28′04″N 0°17′19″W﻿ / ﻿51.46778°N 0.28861°W﻿ / 51.46778; -0.28861 | |
| Manor House | | Finsbury Park, LB Haringey | A105 Green Lanes A503 Seven Sisters Road | 51°34′13″N 0°05′46″W﻿ / ﻿51.57028°N 0.09611°W﻿ / 51.57028; -0.09611 | |
| Manor Top | | Intake, South Yorkshire | A6102 A6135 (formerly A616) | 53°21′39″N 1°25′41″W﻿ / ﻿53.36083°N 1.42806°W﻿ / 53.36083; -1.42806 | |
| Manorway Junction | | Stanford-le-Hope, Thurrock (formerly Essex) | A13 A1013 Stanford Road (formerly A13) A1014 Manorway B1007 | TQ680829 | NB. Not officially signed, also known as Stanford Interchange |
| Manrahead Roundabout | | Beith, North Ayrshire | A737 B777 B7049 | NS343530 | |
| Marble Arch | | City of Westminster | A402 Bayswater Road A4202 Park Lane (road) A5 Edgware Road A40 Oxford Street | 51°30′47″N 0°09′36″W﻿ / ﻿51.51306°N 0.16000°W﻿ / 51.51306; -0.16000 | Article on the Marble Arch the junction was named after. |
| Marcham Interchange | | Marcham, Oxfordshire | A34 A415 | 51°40′09″N 1°18′39″W﻿ / ﻿51.66917°N 1.31083°W﻿ / 51.66917; -1.31083 | |
| Mar Dyke Interchange | Roundabout Interchange | near Aveley and West Thurrock, Thurrock (formerly Essex) | M25 J30 A13 A282 A1306 Arterial Road (J31, former A13) A1090 Stonehouse Lane (J31) Ship Lane (J31) Thurrock Services (J31) | 51°29′50″N 0°16′8″E﻿ / ﻿51.49722°N 0.26889°E﻿ / 51.49722; 0.26889 | Name probably only refers to J30 of the M25, the junction with the A13, but feeder roads link to J31. Exit to J31 clockwise must be made via J30, and access from J31 anticlockwise also must be made via J30. However, J30 has its own south-facing slips. A282 now starts immediately after the diverge at J30 clockwise. |
| Marfleet Roundabout | | Marfleet, Kingston upon Hull, East Riding of Yorkshire | A1033 (Hedon Road) Marfleet Lane | 53°44′53″N 0°16′31″W﻿ / ﻿53.74806°N 0.27528°W﻿ / 53.74806; -0.27528 | |
| Marina Roundabout | | Eaglestone, Milton Keynes | H8 (A421/B4034) Standing Way V8 Marlborough Street | 52°01′32″N 0°43′56″W﻿ / ﻿52.02556°N 0.73222°W﻿ / 52.02556; -0.73222 | |
| Market Cross | | Cheddar, Somerset | A371 Church Street A371 Bath Street B3135 Union Street | 51°16′31″N 2°46′36″W﻿ / ﻿51.27528°N 2.77667°W﻿ / 51.27528; -2.77667 | |
| Markham Moor Roundabout | | West Markham, Nottinghamshire | A1 A57 A638 B1164 Great North Road unclass. | SK719737 | |
| Marks Farm Roundabout | | Braintree, Essex | A120 A131 B1256 | 51°52′53″N 0°35′07″E﻿ / ﻿51.88139°N 0.58528°E﻿ / 51.88139; 0.58528 | |
| Marks Tey Roundabout | Dumbbell | Marks Tey, Essex | A12 A120 Coggeshall Road B1408 London Road Station Road | TL915237 | |
| Marlborough | | Stantonbury, Milton Keynes | V7 Saxon Street V8 Marlborough Street | 52°04′0″N 0°46′34″W﻿ / ﻿52.06667°N 0.77611°W﻿ / 52.06667; -0.77611 | |
| Marr | | Marr, South Yorkshire | A635 Church Lane | 53°32′29″N 1°13′32″W﻿ / ﻿53.54139°N 1.22556°W﻿ / 53.54139; -1.22556 | |
| Marton Circle | | Great Marton, Lancashire | M55 J4 A583 A5230 | SD352335 | |
| Marus Bridge Roundabout | | Wigan, Greater Manchester | A49 Warrington Road B5238 Poolstock Lane Highfield Grange Avenue | SD567031 | |
| Marylebone Circus | | Marylebone, London | A41 Baker Street A501 Marylebone Road | 51°31′20″N 0°09′27″W﻿ / ﻿51.52214°N 0.15749°W﻿ / 51.52214; -0.15749 | |
| Maryville Interchange | | Glasgow | M73 J1 M74 J4 | 55°49′53″N 4°05′56″W﻿ / ﻿55.83139°N 4.09889°W﻿ / 55.83139; -4.09889 | webcam |
| Masbrough Roundabout | | Rotherham, South Yorkshire | A630 Masbrough Street Main Street | 53°25′48″N 1°21′53″W﻿ / ﻿53.43000°N 1.36472°W﻿ / 53.43000; -1.36472 | |
| Mason's Corner | Crossroads | Winchmore Hill, LB Enfield | A105 Green Lanes A105 Ridge Avenue Green Dragon Lane Bush Hill | 51°38′11″N 0°05′26″W﻿ / ﻿51.63639°N 0.09056°W﻿ / 51.63639; -0.09056 | |
| Master Brewer | | Hillingdon, LB Hillingdon | A40 Freezeland Way A437 Long Lane B466 Long Lane | 51°33′14″N 0°26′53″W﻿ / ﻿51.55389°N 0.44806°W﻿ / 51.55389; -0.44806 | |
| Matford Roundabout | | Exeter | A379 Bridge Road A379 Sannerville Way A379 to Marsh Barton | 50°41′28″N 3°30′24″W﻿ / ﻿50.6912°N 3.5067°W﻿ / 50.6912; -3.5067﻿ (Matford Roundabout) | |
| Mawgan Cross | Roundabout | Mawgan, near Helston, Cornwall | B3293 to Goonhilly Downs Gweek Drive to Gweek Higher Lane to Mawgan | 50°04′28″N 5°12′54″W﻿ / ﻿50.0744°N 5.2150°W﻿ / 50.0744; -5.2150﻿ (Mawgan Cross) | |
| Mayford Roundabout | | Woking, Surrey | A320 Egley Road B380 Guildford Road B380 Smart's Heath Road | SU996561 | |
| Mclaren Paragon Roundabout | | Ottershaw, Surrey | A320 Chertsey Road A320 Guildford Road Martyr's Lane | TQ017615 | |
| Mead Cross | | Ashburton, Devon | Gale Road unclass. | SX779712 | |
| Meadowhead | | Norton, South Yorkshire | A61 Meadowhead A61 Chesterfield Road South A6102 Bochum Parkway B6054 Greenhill Parkway | 53°19′36″N 1°28′25″W﻿ / ﻿53.32667°N 1.47361°W﻿ / 53.32667; -1.47361 | |
| The Meadows | | Sandhurst, Berkshire | A30 A331 A321 | SU855599 | |
| Medbourne Roundabout | | Medbourne, Milton Keynes | H5 Portway V3 Fulmer Street | 52°01′18″N 0°48′12″W﻿ / ﻿52.02167°N 0.80333°W﻿ / 52.02167; -0.80333 | |
| Melbury Oak | | Melbury Osmond, Dorset | A37 unclass. | 50°52′13″N 2°35′48″W﻿ / ﻿50.87028°N 2.59667°W﻿ / 50.87028; -2.59667 | |
| Mellanvrane Roundabout | | Treninnick, Newquay, Cornwall | A392 Gannel Link Road A392 Trevemper Road A3058 Trevemper Road Mellanvrane Lane | SW815607 |
| Merrymeet Roundabout | | Whiddon Down, Devon | A30 A382 unclass. | SX697928 | |
| Merstham Interchange | Four Level Stack | Merstham, Surrey | M25 J7 M23 J8 | 51°15′49″N 0°07′34″W﻿ / ﻿51.26361°N 0.12611°W﻿ / 51.26361; -0.12611 | |
| Met Office Roundabout | Roundabout | Bracknell | A3095 Warfield Road, NNE B3022 Park Road, NE A329 London Road, SE A3095 Church Road, SSW unclass. Weather Way, W A329 Millennium Way, NW | 51°25′02″N 0°44′41″W﻿ / ﻿51.4171°N 0.7446°W﻿ / 51.4171; -0.7446﻿ (Met Office Roundabout) | Once the site of the Met Office |
| The Metal Bridge | | Todhills, Cumbria | A74 unclass. | 54°58′25″N 3°00′30″W﻿ / ﻿54.97361°N 3.00833°W﻿ / 54.97361; -3.00833 | Named after the Metal Bridge pub, itself named after the metal bridge over the River Esk |
| Miami Roundabout | Roundabout | Chelmsford, Essex | A1114 London Road (formerly A12) A1114 Princes Road (formerly A12) B1007 Wood Street B1007 Moulsham Street | 51°43′19″N 0°27′38″E﻿ / ﻿51.72194°N 0.46056°E﻿ / 51.72194; 0.46056 | Named after the Miami Hotel which is adjacent to the roundabout. |
| Mickleham Bends Junction | | Mickleham, Surrey | A24 B2209 | TQ170537 | |
| Midsummer Roundabout | | Central Milton Keynes | V6 Grafton Gate Midsummer Boulevard | 52°02′10″N 0°46′14″W﻿ / ﻿52.03611°N 0.77056°W﻿ / 52.03611; -0.77056 | |
| Milehouse Roundabout | | Cross Heath, Staffordshire | A34 B5367 | 53°1′19.26″N 2°13′49.28″W﻿ / ﻿53.0220167°N 2.2303556°W﻿ / 53.0220167; -2.2303556 | |
| Milestone Green | | Mortlake, LB Richmond upon Thames | A205 Upper Richmond Road West B351 Sheen Lane | 51°27′53″N 0°16′01″W﻿ / ﻿51.46472°N 0.26694°W﻿ / 51.46472; -0.26694 | |
| Milk Bottle | | Paignton, Devon | A3022 Torquay Road Cecil Road | |
| Mill Hill Circus | Roundabout | Mill Hill, LB Barnet | A1 Watford Way A5100 The Broadway Lawrence Street | 51°37′00″N 0°14′41″W﻿ / ﻿51.61667°N 0.24472°W﻿ / 51.61667; -0.24472 | |
| Milton Interchange | Roundabout Interchange | Milton, Cambridgeshire | A14 (formerly A45) A10 Ely Road A1309 Milton Road (formerly A10) Cambridge Road. (formerly A10) | 52°14′16″N 0°09′02″E﻿ / ﻿52.23778°N 0.15056°E﻿ / 52.23778; 0.15056 | |
| Milton Interchange | | Milton, Oxfordshire | A34 A4130 unclass. | 51°37′07″N 1°18′11″W﻿ / ﻿51.61861°N 1.30306°W﻿ / 51.61861; -1.30306 | |
| Minimax Corner | | Feltham, LB Hounslow | A312 Fagg's Road A312 Harlington Road West A315 Staines Road | 51°27′26″N 0°24′37″W﻿ / ﻿51.45722°N 0.41028°W﻿ / 51.45722; -0.41028 | Named after Minimax Limited, a former maker of fire extinguishers that had a factory here. |
| Mitchams Corner | | Cambridge, Cambridgeshire | A1134 Victoria Road (Cambridge Ring Road) A1134 Milton Road (Cambridge Ring Road) A1303 Chesterton Road Victoria Avenue Springfield Road Corona Road Riverside Court | 52°12′51″N 0°7′29″E﻿ / ﻿52.21417°N 0.12472°E﻿ / 52.21417; 0.12472 | western side of gyratory formed by the old Croft Holme Lane |
| Moby Dick | Crossroads | LB Barking and Dagenham | A12 Eastern Avenue A1112 Whalebone Lane North | 51°34′51″N 0°08′29″E﻿ / ﻿51.58083°N 0.14139°E﻿ / 51.58083; 0.14139 | Named after public house adjacent to junction. |
| Moira Toll Gate | | Moira, Leicestershire | B5003 Shortheath Road B5003 Ashby Road B586 Measham Road | 52°44′12″N 1°32′05″W﻿ / ﻿52.73667°N 1.53472°W﻿ / 52.73667; -1.53472 | |
| Moles Interchange | Dual Dumbbell Roundabout Interchange | Ware, Hertfordshire | A10 A1170 Great Cambridge Road | 51°49′40″N 0°02′02″W﻿ / ﻿51.82778°N 0.03389°W﻿ / 51.82778; -0.03389 | Junction location is just south of Moles Wood |
| Mollinsburn Junction | Fork Interchange | Glasgow | M73 J3 A80 Cumbernauld Road | 55°55′05″N 4°03′59″W﻿ / ﻿55.91806°N 4.06639°W﻿ / 55.91806; -4.06639 | |
| Monks Cross | | Callington, Cornwall | B3257 unclass. | 50°31′23″N 4°16′52″W﻿ / ﻿50.5230°N 4.2812°W﻿ / 50.5230; -4.2812﻿ (Monks Cross) | |
| Monks Heath Crossroads | | Monks Heath, Cheshire | A34 Congleton Road A537 Chelford Road | 53°15′50″N 2°14′04″W﻿ / ﻿53.26389°N 2.23444°W﻿ / 53.26389; -2.23444 | |
| Monkspath Interchange | | Monkspath, West Midlands | M42 J4 A34 A3400 (formerly A34) | SP146758 | |
| Monkston Roundabout | | Monkston, Milton Keynes | H7 Chaffron Way V11 (A4146) Tongwell Street | 52°02′26″N 0°41′37″W﻿ / ﻿52.04056°N 0.69361°W﻿ / 52.04056; -0.69361 | |
| Monktonhead Roundabout | | Monkton, Ayrshire | A79 A78 unclass. | NS356287 | |
| The Monument | | The City of London | A3 King William Street A10 Gracechurch Street Cannon Street Eastcheap | 51°30′39″N 0°05′12″W﻿ / ﻿51.51083°N 0.08667°W﻿ / 51.51083; -0.08667 | Named after the Monument to the Great Fire of London at the junction. |
| Moor Junction aka Waterside | | Longford, LB Hillingdon | A4 Colnbrook Bypass A3044 Stanwell Moor Road Speedbird Way | 51°29′01″N 0°29′34″W﻿ / ﻿51.48361°N 0.49278°W﻿ / 51.48361; -0.49278 | |
| Moor Cross | | Cornwood, Devon | Bond Street unclass. | SX609588 | |
| Morants Court Cross | | Sevenoaks, Kent | A224 B2211 | 51°18′15″N 0°09′09″E﻿ / ﻿51.30417°N 0.15250°E﻿ / 51.30417; 0.15250 | |
| Mountbatten Roundabout | | Bournemouth-Poole | A3049 Wallisdown Road A348 Ringwood Road Francis Avenue | 50.754115, -1.932480 | Named after the Mountbatten pub |
| Mount Corner | | Hanworth, LB Hounslow | A312 Uxbridge Road A312 Hampton Road West A314 Hounslow Road | 51°26′26″N 0°23′21″W﻿ / ﻿51.44056°N 0.38917°W﻿ / 51.44056; -0.38917 | |
| Mount Farm Roundabout | | Mount Farm, Milton Keynes | V8 Marlborough Street Bond Avenue | 52°00′43″N 0°43′13″W﻿ / ﻿52.01194°N 0.72028°W﻿ / 52.01194; -0.72028 | |
| Mount Wise Roundabout | | Mount Wise, Newquay, Cornwall | A392 Gannel Link Road B3282 Mount Wise B3282 Higher Tower Road Pentire Road | SW804614 |
| Mounthooly Roundabout | | Aberdeen | A96 West North Street A944 Hutcheon Street B990 Nelson Terrace | NJ940070 | |
| Movers Lane | | Barking, LB Barking and Dagenham | A13 Alfreds Way Movers Lane River Road | 51°31′50″N 0°05′32″E﻿ / ﻿51.53056°N 0.09222°E﻿ / 51.53056; 0.09222 | |
| Muckley Corner | | Lichfield | A5 Watling Street A461 Walsall Road Hall Lane | 52°39′22″N 1°52′54″W﻿ / ﻿52.65611°N 1.88167°W﻿ / 52.65611; -1.88167 | |
| Mullacott Cross | Roundabout | West Down, Devon | A361 A3123 B3343 to Woolacombe | 51°10′46″N 4°07′52″W﻿ / ﻿51.1794°N 4.1312°W﻿ / 51.1794; -4.1312﻿ (Mullacott Cross) | |
| Mumps Roundabout | | Oldham, Greater Manchester | A62 A669 B6477 | 53°32′35″N 2°06′05″W﻿ / ﻿53.54306°N 2.10139°W﻿ / 53.54306; -2.10139 | |
| Mushroom Roundabout | | Rotherham, South Yorkshire | A630 A6123 | 53°26′32″N 1°19′19″W﻿ / ﻿53.44222°N 1.32194°W﻿ / 53.44222; -1.32194 | |
| Musley Bank | | Malton, North Yorkshire | A64 B1248 | SE769706 | |
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