M25 J21 traffic

No incidents reported at M25 J21 right now.

Updated 03:29 UK time · at J21 and the stretches either side

Right now

Nothing reported at M25 J21 at the moment.

No closures planned at J21 tonight.

Incidents

Collisions

Road closed

3times

Typical time to clear

1 h 27 minmedian of 27

Busiest time

15:00–16:00

M25 crash J21A–J22 clockwiseyesterday 16:40 · cleared after 52 min
M25 crash J21–J20 anticlockwiseWed 16:40 · cleared after 4 h 54 min
M25 stopped traffic J14–J13 anticlockwise23 Oct 2026 06:37 · cleared after 10 h 51 min
M25 crash J24–J25 clockwise19 Oct 2026 15:14 · cleared after 3 h 56 min
M25 crash J21–J20 anticlockwise16 Oct 2026 16:12 · cleared after 3 h 12 min
M25 reported crash J21–J20 anticlockwise16 Oct 2026 10:33 · cleared after 48 min
M25 crash J22–J23 clockwise16 Oct 2026 02:24 · cleared after 4 h 56 min
M25 closed J21 anticlockwise12 Oct 2026 15:43 · cleared after 3 h 31 min
M25 crash J24–J25 clockwise2 Oct 2026 12:54 · cleared after 7 h 1 min
M25 crash J17–J16 anticlockwise1 Oct 2026 06:23 · cleared after 2 h 19 min
M25 crash J20–J19 anticlockwise28 Sept 2026 17:02 · cleared after 1 h 5 min

No incidents have closed it right now.

No closures are planned at J21 tonight. 1 is planned over the next 7 days (listed above).

8 collisions reported at or either side of J21 in the last 90 days, the latest on 28 Oct 2026 at 16:40.

Includes incidents at J21 and on the stretches either side of it. Sources: National Highways, TomTom, TfL and Traffic Wales. Times are UK time.