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A405 Moderate Cleared

A405 northbound between M1 and M25 | Northbound | Congestion

18 Apr 2026, 14:09 Northbound 84 views

Incident Details

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

A405
Moderate
Cleared
14:09, 18 Apr 2026

📜 Incident timeline

· First report

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 27h 11m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 27h 46m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 28h 21m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 29h 1m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 29h 36m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 30h 16m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 30h 51m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 31h 26m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 32h 1m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 32h 36m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 33h 11m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 33h 46m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 34h 21m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 34h 56m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 35h 31m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 36h 6m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 36h 41m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 37h 16m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 37h 56m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 38h 36m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 39h 11m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 39h 46m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 40h 26m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 41h 1m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 2026.
Delay : There are currently delays of 10 minutes against expected traffic.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 41h 36m. Delays of 10 minutes still recorded. Monitoring continues.

· Update

Location : The A405 northbound between the junctions with the M1 and the M25 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 15:00 and 15:15 on 18 April 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

A405 — A405 northbound between M1 and M25 | Northbound | Congestion Full details 👉 https://uktrafficupdates.uk/traffic/incidents/25732364-a405-northbound-between-m1-and-m25-northbound-congestion/

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