A4 traffic today: live crashes, closures and delays

No incidents reported on the A4 right now.

Updated 23:12 UK time. The live map updates every minute.

Open the A4 on the live map

Right now on the A4

Nothing reported on the A4 at the moment.

Earlier today

▲
A4 westbound · Knightsbridge

Obstruction or hazard

14:09–15:17 (cleared after 1 h 7 min)

TfL
1. 14:09 TfL: obstruction or hazard, road closed
2. 14:21 TfL: “(Westbound) at the junction of Wilton Place - Road is closed due to a building fire Use other route. Northbound traffic is slow on Grosvenor Place from Buckingham Palace Road. Westbound traffic is slow on Piccadilly a…”
3. 14:31 TfL: road reopened, “Lane one and two m(of three) is closed due to a building fire. Northbound traffic is slow on Grosvenor Place from Buckingham Palace Road. Westbound traffic is slow on Piccadilly approaching Hyde Park Corner. Eastbound…”
4. 14:57 TfL: “All lanes are open following clearance of a building fire. Northbound traffic is slow on Grosvenor Place from Buckingham Palace Road. Westbound traffic is slow on Piccadilly approaching Hyde Park Corner. Eastbound tra…”
5. 14:59 TfL: “Lane one and two m(of three) is closed due to a building fire. Northbound traffic is slow on Grosvenor Place from Buckingham Palace Road. Westbound traffic is slow on Piccadilly approaching Hyde Park Corner. Eastbound…”
6. 15:01 TfL: “All lanes are open following clearance of a building fire. Northbound traffic is slow on Grosvenor Place from Buckingham Palace Road. Westbound traffic is slow on Piccadilly approaching Hyde Park Corner. Eastbound tra…”
7. 15:05 TfL: “[A4] Knightsbridge (Westbound) at the junction of Wilton Place - All lanes are open following clearance of a building fire. Northbound traffic is slow on Grosvenor Place. Expect delays”
8. 15:17 TfL no longer reports it
9. 15:17 All clear: no source reports it any more

Recent crashes and closures on the A4

A4 crash Great West Road westbound · Thu 22:57, cleared after 12 h
A4 crash Bath Road eastbound · Tue 23:29, cleared after 54 min
A4 crash Trafalgar Square northbound · 4 Oct 2026 02:23, cleared after 15 h 11 min
A4 crash Strand westbound · 26 Sept 2026 21:21, cleared after 1 h 45 min
A4 closed · 22 Sept 2026 16:15, cleared after 29 h 42 min

The A4 over the last 7 days

4 incidents recorded, 3 of them collisions
Typical time to clear: 12 h (median of 4)

Questions

Is the A4 closed right now?

No full closures are reported on the A4 right now.

Have there been any crashes on the A4 today?

None reported so far today (since midnight UK time).

How can I get A4 traffic alerts?

Follow @motorways.me on Bluesky: it posts crashes and stopped traffic on motorways as they're reported, with a timeline. Or send it a message saying “A4” to get everything reported on the A4 in the last 4 hours.

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About this page

This page lists incidents on the A4 as the data sources report them: lane and road closures set by National Highways, what the overhead message signs say ("REPORT OF COLLISION", "STRANDED VEHICLE"), and TomTom's reports with delay times and queue lengths. Reports of the same event are merged, and every line comes from the sources' own facts. Times are UK time. Always follow the signs on the road.