M25 Clockwise jct 21 to Jct 21A Lane 4,3 closure
ClearedM25 Clockwise jct 21 to Jct 21A Lane 4,3 closure
- Start time
- Mon, Oct 12, 2026 9:15 PM
- Expected end
- Tue, Oct 13, 2026 4:30 AM
- Duration
- 2 hours 15 minutes 1 second
- Road
- M25 – M25 Clockwise Within J21
- Category
- Road Maintenance
- Direction
- Clockwise
- Carriageway
- Dual Carriageway
- Lanes affected
- Lane 3 closed, 1 of 3 lanes affected, 1 of 4 lanes affected
- Reason
- Roadworks
Live incident
Active roadworks
Planned
Cleared
Hover or tap markers for full details
Move Insights
Thinking of moving to this area?
Check flood risk, planning history, EPC ratings and more with a Move Insights property report.
Flood risk assessment
Planning history
EPC ratings & more
- First published
- Mon, Oct 12, 2026 9:15 PM
- Last updated
- Mon, Oct 12, 2026 10:57 PM
- Cleared
- Mon, Oct 12, 2026 11:30 PM
- Latest update: M25 Clockwise jct 21 to Jct 21A Lane 4,3 closure
- Coordinates
- 51.715469, -0.391120
- Latitude span
- 51.714083 – 51.716536
- Longitude span
- -0.406387 – -0.381687
- Bounding box centre
- 51.715310, -0.394037
- Location descriptions
-
- M25 clockwise within J21
- M25 clockwise between J20 and J21
- Feed validity status
- Active
- Overall feed start
- Mon, Oct 12, 2026 9:15 PM
- Overall feed end
- Tue, Oct 13, 2026 4:30 AM
- Feed window length
- 7 hours 15 minutes
- Probability code (raw)
- certain
- Compliance option (raw)
- mandatory
- Source identification (raw)
- roadworks
- Management type value
- other
- Contra-flow flag (raw)
- false
- Width restriction flag (raw)
- false
- Height restriction flag (raw)
- false
- Weight restriction flag (raw)
- false
Segment 1
18 coordinate pairs- Description
- M25 clockwise within J21
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl3
- Lane Number
- 3
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 3 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- M25
- Linear Element Model
- The Network Model
- Linear Element Id
- {FC07E346-0B13-42E0-AFD2-0A3E1E93D665}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 632 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.714801 -0.394126 51.714972 -0.393241 51.715177 -0.39226 51.715218 -0.392084 51.71544 -0.391129 51.715605 -0.390417 51.715638 -0.390278 51.715703 -0.389977 51.715826 -0.38941 51.715985 -0.388543 51.71612 -0.387739 51.716148 -0.387529 51.716215 -0.387017 51.716252 -0.386639 51.716339 -0.385952 51.716344 -0.385908 51.716379 -0.385427 51.716383 -0.385353
Segment 2
10 coordinate pairs- Description
- M25 clockwise between J20 and J21
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl3
- Lane Number
- 3
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 4 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- M25
- Linear Element Model
- The Network Model
- Linear Element Id
- {046FB3B0-89F0-4EC2-968D-D5F79D834093}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 394 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.714125 -0.39972 51.714128 -0.399601 51.714158 -0.399117 51.714164 -0.399013 51.714241 -0.398034 51.714299 -0.397458 51.714373 -0.396876 51.714416 -0.396574 51.714509 -0.395929 51.714801 -0.394126
Segment 3
9 coordinate pairs- Description
- M25 clockwise within J21
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl3
- Lane Number
- 3
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 3 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- M25
- Linear Element Model
- The Network Model
- Linear Element Id
- {29BB1E70-37D6-4EF4-9C4E-C430220FB45A}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 210 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.716425 -0.384719 51.716467 -0.38391 51.716473 -0.383765 51.716476 -0.383703 51.716519 -0.38301 51.716529 -0.382631 51.716536 -0.381765 51.716536 -0.381753 51.716536 -0.381687
Segment 4
2 coordinate pairs- Description
- M25 clockwise within J21
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl3
- Lane Number
- 3
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 3 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- M25
- Linear Element Model
- The Network Model
- Linear Element Id
- {DE22094C-805A-4254-ACF7-FE3F6C9E825C}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 4 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.716383 -0.385353 51.716392 -0.385286
Segment 5
7 coordinate pairs- Description
- M25 clockwise between J20 and J21
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl3
- Lane Number
- 3
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 4 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- M25
- Linear Element Model
- The Network Model
- Linear Element Id
- {5342AF68-4779-4DBC-A30E-BC1467F9CAC3}
- Linear Element Type
- A Carriageway
- From Distance
- 478 m
- To Distance
- 938 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.714132 -0.406387 51.714123 -0.405145 51.714111 -0.403634 51.71409 -0.402091 51.714083 -0.401328 51.714098 -0.400546 51.714125 -0.39972
Segment 6
2 coordinate pairs- Description
- M25 clockwise within J21
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl3
- Lane Number
- 3
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 3 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- M25
- Linear Element Model
- The Network Model
- Linear Element Id
- {5A455410-3E3F-4E9A-83D6-E4A19AC39AE1}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 21 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.716413 -0.385032 51.716425 -0.384719
Segment 7
2 coordinate pairs- Description
- M25 clockwise within J21
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl3
- Lane Number
- 3
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 3 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- M25
- Linear Element Model
- The Network Model
- Linear Element Id
- {BFFD42BE-2665-4252-9CB5-AC4691B2D17A}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 17 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.716392 -0.385286 51.716413 -0.385032
- Geometry type
- MultiLineString
- Geometry points
- 50
- First coordinate pair
- -0.394126, 51.714801
- Road section segments
- 1
- Road section points
- 50
View geometry JSON
{
"type": "MultiLineString",
"coordinates": [
[
[
-0.394126,
51.714801
],
[
-0.393241,
51.714972
],
[
-0.39226,
51.715177
],
[
-0.392084,
51.715218
],
[
-0.391129,
51.71544
],
[
-0.390417,
51.715605
],
[
-0.390278,
51.715638
],
[
-0.389977,
51.715703
],
[
-0.38941,
51.715826
],
[
-0.388543,
51.715985
],
[
-0.387739,
51.71612
],
[
-0.387529,
51.716148
],
[
-0.387017,
51.716215
],
[
-0.386639,
51.716252
],
[
-0.385952,
51.716339
],
[
-0.385908,
51.716344
],
[
-0.385427,
51.716379
],
[
-0.385353,
51.716383
],
[
-0.39972,
51.714125
],
[
-0.399601,
51.714128
],
[
-0.399117,
51.714158
],
[
-0.399013,
51.714164
],
[
-0.398034,
51.714241
],
[
-0.397458,
51.714299
],
[
-0.396876,
51.714373
],
[
-0.396574,
51.714416
],
[
-0.395929,
51.714509
],
[
-0.394126,
51.714801
],
[
-0.384719,
51.716425
],
[
-0.38391,
51.716467
],
[
-0.383765,
51.716473
],
[
-0.383703,
51.716476
],
[
-0.38301,
51.716519
],
[
-0.382631,
51.716529
],
[
-0.381765,
51.716536
],
[
-0.381753,
51.716536
],
[
-0.381687,
51.716536
],
[
-0.385353,
51.716383
],
[
-0.385286,
51.716392
],
[
-0.406387,
51.714132
],
[
-0.405145,
51.714123
],
[
-0.403634,
51.714111
],
[
-0.402091,
51.71409
],
[
-0.401328,
51.714083
],
[
-0.400546,
51.714098
],
[
-0.39972,
51.714125
],
[
-0.385032,
51.716413
],
[
-0.384719,
51.716425
],
[
-0.385286,
51.716392
],
[
-0.385032,
51.716413
]
]
]
}
View road section coordinates
[
[
[
-0.394126,
51.714801
],
[
-0.393241,
51.714972
],
[
-0.39226,
51.715177
],
[
-0.392084,
51.715218
],
[
-0.391129,
51.71544
],
[
-0.390417,
51.715605
],
[
-0.390278,
51.715638
],
[
-0.389977,
51.715703
],
[
-0.38941,
51.715826
],
[
-0.388543,
51.715985
],
[
-0.387739,
51.71612
],
[
-0.387529,
51.716148
],
[
-0.387017,
51.716215
],
[
-0.386639,
51.716252
],
[
-0.385952,
51.716339
],
[
-0.385908,
51.716344
],
[
-0.385427,
51.716379
],
[
-0.385353,
51.716383
],
[
-0.39972,
51.714125
],
[
-0.399601,
51.714128
],
[
-0.399117,
51.714158
],
[
-0.399013,
51.714164
],
[
-0.398034,
51.714241
],
[
-0.397458,
51.714299
],
[
-0.396876,
51.714373
],
[
-0.396574,
51.714416
],
[
-0.395929,
51.714509
],
[
-0.394126,
51.714801
],
[
-0.384719,
51.716425
],
[
-0.38391,
51.716467
],
[
-0.383765,
51.716473
],
[
-0.383703,
51.716476
],
[
-0.38301,
51.716519
],
[
-0.382631,
51.716529
],
[
-0.381765,
51.716536
],
[
-0.381753,
51.716536
],
[
-0.381687,
51.716536
],
[
-0.385353,
51.716383
],
[
-0.385286,
51.716392
],
[
-0.406387,
51.714132
],
[
-0.405145,
51.714123
],
[
-0.403634,
51.714111
],
[
-0.402091,
51.71409
],
[
-0.401328,
51.714083
],
[
-0.400546,
51.714098
],
[
-0.39972,
51.714125
],
[
-0.385032,
51.716413
],
[
-0.384719,
51.716425
],
[
-0.385286,
51.716392
],
[
-0.385032,
51.716413
]
]
]
- Cause type
- Road Maintenance
- Detailed cause
- Roadworks
- Compliance
- Mandatory
- Probability
- Certain
- Validity status
- Active
- Road management
- Other
- Feed provider
- National Highways
- Data source
- Roadworks
- Feed version
- 1
- Record created
- Mon, Oct 12, 2026 9:15 PM
- Record versioned
- Mon, Oct 12, 2026 10:57 PM
- Coordinate source
- Geometry
Driving on the M25? See every live closure, roadwork and planned restriction on this road.
M25 live closuresRelated incidents
M1 southbound Approach to Jct 9 lane 1 closure (MP 46/5 to 45/7)
Active Roadworks National Highways
St Albans
M1 · M1 Southbound Between J10 And J9
Expected to clear in 50 minutes 47 seconds
Started 12 Oct 2026, 20:25
Expected clear 13 Oct 2026, 04:00
M1 southbound Approach to Jct 9 lane 1 closure (MP 46/5 to 45/7)
Category: Construction Work
View update
M25 Anti-clockwise Jct 5 Hard shoulder closure
Planned Roadworks National Highways
Dunton Green
M25 · M25 Anti-Clockwise Within J5
Starts in 17 hours 50 minutes
Starts 13 Oct 2026, 21:00
Expected clear 14 Oct 2026, 04:30
M25 Anti-clockwise Jct 5 Hard shoulder closure
Category: Road Maintenance
View update
M1 Southbound Jct 6 exit slip road Lane 1 closure,
Planned Roadworks National Highways
St Albans
M1 · Link Road From M1 J6A Southbound To M25 J21
Starts in 17 hours 50 minutes
Starts 13 Oct 2026, 21:00
Expected clear 14 Oct 2026, 04:30
M1 Southbound Jct 6 exit slip road Lane 1 closure,
Category: Road Maintenance
View update
M25 Anti-clockwise Jct 16 to Jct 15 Lane 1,2 closure
Planned Roadworks National Highways
Slough
M25 · M25 Anti-Clockwise Within J15
Starts in 17 hours 50 minutes
Starts 13 Oct 2026, 21:00
Expected clear 14 Oct 2026, 04:30
M25 Anti-clockwise Jct 16 to Jct 15 Lane 1,2 closure
Category: Road Maintenance
View update
M25 Clockwise jct 21 to Jct 21A Lane 4,3 closure
Planned Roadworks National Highways
St Albans
M25 · M25 Clockwise Within J21
Starts in 17 hours 50 minutes
Starts 13 Oct 2026, 21:00
Expected clear 14 Oct 2026, 04:30
M25 Clockwise jct 21 to Jct 21A Lane 4,3 closure
Category: Road Maintenance
View update
M25 Anti-clockwise Jct 6 to Jct 5 lane 1,2 closure
Planned Roadworks National Highways
Caterham
M25 · M25 Anti-Clockwise Between J6 And J5
Starts in 17 hours 50 minutes
Starts 13 Oct 2026, 21:00
Expected clear 14 Oct 2026, 04:30
M25 Anti-clockwise Jct 6 to Jct 5 lane 1,2 closure
Category: Road Maintenance
View update