🚨 Emergency? Call 999 · Motorway breakdown? 0300 123 5000
LIVE
Loading incidents...

Start typing to search

Find traffic updates, service providers, tools & more

📢 Seen an incident on this road? Report it in 30 seconds Report ›
LIVE MON–FRI Watch
🏠 Traffic Hub 🚨 Major 🟠 Roadworks 🗺️ Live Map 🏴 All England 🔴 All Incidents 📊 Regions 🕐 Worst Commute 🔍 Was I Affected? 💬 Discussions
M4 Moderate Cleared

M4 spur (Heathrow) southbound between M4 and J4A | Southbound | Congestion

29 Jun 2026, 17:01 Southbound 50 views

Incident Details

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

M4
Moderate
Cleared
17:01, 29 Jun 2026

📜 Incident timeline

· First report

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 34 minutes. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 1h 14m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 1h 49m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 2h 24m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 2h 59m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 3h 34m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 4h 9m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 4h 49m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 5h 24m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 5h 59m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 6h 34m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 7h 9m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 7h 44m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 8h 19m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 8h 54m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 9h 29m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 10h 4m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 10h 39m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 11h 14m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 11h 49m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 12h 24m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 12h 59m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 13h 34m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 14h 14m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 14h 49m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 15h 24m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 16h 54m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 17h 34m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 18h 9m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 18h 44m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 19h 24m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 19h 59m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 20h 39m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 21h 19m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 21h 54m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 22h 34m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 23h 9m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 23h 49m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 24h 29m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 25h 4m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 25h 44m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 26h 19m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The M4 SPUR southbound between junctions J4 and J4A .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 29 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

Wording as published by National Highways, recorded as it changed.

📢 Share This Incident

M4 — M4 spur (Heathrow) southbound between M4 and J4A | Southbound | Congestion Full details 👉 https://uktrafficupdates.uk/traffic/incidents/26195330-m4-spur-heathrow-southbound-between-m4-and-j4a-southbound/

Was I Affected?

Enter when you were travelling on M4 to check

🏠Home 🗺️Map 📊Regions 🆘Help
🔍
⚡ Early Warning System
We detected congestion building on the M4 28 minutes before this incident was officially reported.
In the last 30 days, we've detected 20 incidents on the M4 an average of 1265 minutes early.
Get Early Warnings for M4 → From £2.99/mo · 7-day free trial