M25 crash J20 clockwise

Crash on the M25 clockwise at J20 on Saturday 24 October 2026, from 09:14. Cleared at 13:49 after 4 h 35 min. Timeline of reports from the motorway signs and TomTom.

Status

Cleared 13:49 on 24 Oct 2026, after 4 h 35 min

Location

M25 clockwise · J20

Reported as

Collision

At its worst

Delay ~7 min

Sources

Motorway signs ×3 · TomTom

Timeline

1. Sat 09:14 Motorway signs: “REPORT OF COLLISION”
2. Sat 09:37 Motorway signs: “COLLISION ON SLIP ROAD”
3. Sat 10:08 Motorway signs no longer show “REPORT OF COLLISION”
4. Sat 10:40 Motorway signs: “OBSTRUCTION ON SLIP ROAD”
5. Sat 11:08 Motorway signs no longer show “COLLISION ON SLIP ROAD”
6. Sat 11:46 TomTom: queueing traffic, “Slow traffic”, delay ~4 min
7. Sat 12:08 Motorway signs no longer show “OBSTRUCTION ON SLIP ROAD”
8. Sat 12:36 TomTom: “Queuing traffic”
9. Sat 12:50 TomTom: “Slow traffic”
10. Sat 13:49 TomTom no longer reports it
11. Sat 13:49 All clear: no source reports it any more

Source reports

• Overhead signs read “REPORT OF COLLISION” (3 signs; furthest along: M25 clockwise within J20).
• Overhead signs read “COLLISION ON SLIP ROAD” (1 sign; furthest along: M25 J20 clockwise exit).
• Overhead signs read “OBSTRUCTION ON SLIP ROAD” (2 signs; furthest along: M25 clockwise between J19 and J20).
• Slow traffic

Other recent incidents on the M25

• M25 crash J27–J26 anticlockwiseyesterday 19:13 · cleared after 1 h 9 min
• M25 crash J25–J26 clockwiseyesterday 19:12 · cleared after 1 h 9 min
• M25 reported crash J5 clockwiseyesterday 18:40 · cleared after 42 min
• M25 crash J5–J6 clockwiseyesterday 17:35 · cleared after 1 h 16 min
• M25 crash J5–J6 clockwiseyesterday 17:25 · cleared after 1 h 26 min
• M25 stopped traffic J30yesterday 17:06 · cleared after 1 h 4 min
• M25 crash J21A–J22 clockwiseyesterday 16:40 · cleared after 52 min
• M25 crash J30–J29 anticlockwiseyesterday 09:43 · cleared after 1 h 36 min
• M25 reported crash J27 anticlockwiseyesterday 08:38 · cleared after 41 min
• M25 stopped traffic J3–J2yesterday 07:02 · cleared after 5 h 16 min

Live traffic and past incidents at M25 J20.

The sources don't report causes or injuries, so neither does this page. Times are UK time. For alerts, follow @motorways.me on Bluesky.