M1 J20 traffic

No incidents reported at M1 J20 right now.

Updated 03:28 UK time · at J20 and the stretches either side

Right now

Nothing reported at M1 J20 at the moment.

Southbound J21–J20until 06:002 of 4 lanes closedLane 1.2 closure southbound
Northbound J20until 06:002 of 4 lanes closedLane 1.2 closure northbound
Northbound J20until 06:001 of 3 lanes closedJct 20 entry slip road lane closure northbound

No closures planned at J20 tonight.

Incidents

Collisions

Road closed

3times

Typical time to clear

1 h 2 minmedian of 37

Busiest time

13:00–14:00

M1 crash J20–J21 northboundyesterday 12:30 · cleared after 2 h 51 min
M1 crash J21–J20 southboundSun 20:32 · cleared after 1 h 14 min
M1 crash J21–J20 southboundSun 17:36 · cleared after 2 h 39 min
M1 reported crash J19–J20 northboundFri 13:18 · cleared after 44 min
M1 reported crash J21–J20 southboundThu 23:48 · cleared after 40 min
M1 crash J22–J21A southboundThu 14:36 · cleared after 4 h 59 min
M1 reported crash J20–J21 northbound24 Oct 2026 21:13 · cleared after 47 min
M1 crash J20–J21 northbound24 Oct 2026 12:21 · cleared after 2 h 18 min
M1 crash J19–J18 southbound17 Oct 2026 09:43 · cleared after 1 h 15 min
M1 crash J21A–J22 northbound16 Oct 2026 13:06 · cleared after 4 h 27 min
M1 crash J20–J21 northbound15 Oct 2026 15:00 · cleared after 1 h 49 min
M1 crash J20–J21 northbound14 Oct 2026 14:49 · cleared after 1 h 13 min
M1 crash J22–J21A southbound9 Oct 2026 13:59 · cleared after 3 h 14 min
M1 stopped traffic J21–J20 southbound8 Oct 2026 14:07 · cleared after 3 h 58 min
M1 reported crash J20–J21 northbound3 Oct 2026 09:51 · cleared after 47 min

No incidents have closed it right now.

No closures are planned at J20 tonight.

17 collisions reported at or either side of J20 in the last 90 days, the latest on 2 Nov 2026 at 12:30.

Includes incidents at J20 and on the stretches either side of it. Sources: National Highways, TomTom, TfL and Traffic Wales. Times are UK time.