M25 crash J21–J20 anticlockwise

Crash on the M25 anticlockwise at J21–J20 on Friday 6 November 2026, from 18:33. Cleared at 19:16 after 43 min. Timeline of reports from the motorway signs.

Status

Cleared 19:16 on 6 Nov 2026, after 43 min

Location

M25 anticlockwise · J21–J20

Reported as

Collision

Sources

Motorway signs

Timeline

1. 18:33 Motorway signs: “COLLISION SLOW DOWN”
2. 19:16 Motorway signs no longer show “COLLISION SLOW DOWN”
3. 19:16 All clear: no source reports it any more

Source reports

• Overhead signs read “COLLISION SLOW DOWN” (1 sign; furthest along: M25 anti-clockwise between J21 and J20).

Other recent incidents on the M25

• M25 crash J22–J21A clockwise19:04 · Live
• M25 crash J24–J25 clockwise19:03 · cleared after 42 min
• M25 stopped traffic J16–J17 clockwise16:59 · cleared after 1 h 46 min
• M25 crash J27–J26 anticlockwise13:07 · cleared after 5 h 37 min
• M25 crash J15–J16 clockwise11:03 · cleared after 3 h 40 min
• M25 stopped traffic J11–J10 anticlockwise10:04 · cleared after 9 h 14 min
• M25 stopped traffic J209:46 · cleared after 8 h 37 min
• M25 crash J5 anticlockwiseyesterday 15:43 · cleared after 4 h 26 min
• M25 stopped traffic J19–J18 anticlockwiseyesterday 15:22 · cleared after 4 h 18 min
• M25 crash J26–J27 clockwiseyesterday 15:22 · cleared after 4 h 35 min

Live traffic and past incidents at M25 J21 and 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.