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A1 Moderate Cleared

A1 northbound between A603 and A421 | Northbound | Congestion

25 Jun 2026, 16:37 Northbound 57 views

Incident Details

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

A1
Moderate
Cleared
16:37, 25 Jun 2026

📜 Incident timeline

· First report

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 June 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 33 minutes. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 8m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 43m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 18m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 53m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 28m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 3m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 38m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 13m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 48m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 23m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 58m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 33m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 8m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 43m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 18m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 53m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 28m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 3m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 38m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 18m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 53m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 28m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 3m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 43m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 18m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 58m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 38m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 18m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 53m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 33m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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 13m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A1 northbound between the junctions with the A603 and the A421 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 16:30 and 16:45 on 25 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

A1 — A1 northbound between A603 and A421 | Northbound | Congestion Full details 👉 https://uktrafficupdates.uk/traffic/incidents/26166391-a1-northbound-between-a603-and-a421-northbound-congestion/

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