M1 crash J23A southbound

Crash on the M1 southbound at J23A on Sunday 27 September 2026, from 11:26. Cleared at 12:30 after 1 h 5 min. Timeline of reports from TomTom and the motorway signs.

Status

Cleared 12:30 on 27 Sept 2026, after 1 h 5 min

Location

M1 southbound · J23A

Reported as

Collision

At its worst

Stationary traffic · delay ~21 min

Sources

TomTom · Motorway signs

Timeline

1. Sun 11:26 Motorway signs: “COLLISION SLOW DOWN”
2. Sun 11:40 TomTom: queueing traffic, “Stationary traffic”, delay ~9 min
3. Sun 11:49 TomTom: now says collision, delay now ~21 min (was ~12), “Stationary traffic, Incident”
4. Sun 12:03 TomTom: delay now ~9 min (was ~17), “Queuing traffic, Incident”
5. Sun 12:08 TomTom: now says queueing traffic, delay now ~4 min (was ~9), “Slow traffic”
6. Sun 12:12 TomTom no longer reports it
7. Sun 12:30 Motorway signs no longer show “COLLISION SLOW DOWN”
8. Sun 12:30 All clear: no source reports it any more

Source reports

• Slow traffic
• Overhead signs read “COLLISION SLOW DOWN” (1 sign; furthest along: M1 southbound within J23A).

Other recent incidents on the M1

• M1 stopped traffic J36–J37 northbound13:45 · Live
• M1 crash J11 northbound11:03 · cleared after 1 h 49 min
• M1 crash J24A northbound07:14 · cleared after 27 min
• M1 crash J16–J17 northbound06:39 · cleared after 40 min
• M1 crash J11–J11A northbound06:11 · cleared after 4 h 41 min
• M1 crash J6A–J8 northboundyesterday 22:39 · cleared after 39 min
• M1 reported crash J23A northboundyesterday 19:28 · cleared after 49 min
• M1 stopped traffic J16–J17 northboundyesterday 19:28 · cleared after 5 h 51 min
• M1 crash J21A–J21 southboundyesterday 18:50 · cleared after 1 h 19 min
• M1 crash J23–J22 southboundyesterday 16:59 · cleared after 51 min

Live traffic and past incidents at M1 J23A.

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