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A421
🟢 A-road

A421 Traffic News

A421 Trunk Road · Milton Keynes (M1 J13) → Bedford (A6)
A421 TRAFFIC NOW
A421NO REPORTED INCIDENTSCHECKED EVERY 5 MIN · 24/7
National Highways data, UK TIME
Clear ⏱ Updated 15:21

A421 traffic at 15:21 on Tuesday 3 November: no major incidents reported — live National Highways updates every 5 minutes, 24/7.

A421 traffic now: accidents & incidents by direction at 15:21
→ A421 eastbound traffic✅ No incidents reported ← A421 westbound traffic✅ No incidents reported
🚨 0 incidents 🚧 0 roadworks
🔍
25 miles long
Regions: South East, East of England
Home › Traffic › Roads › A421

🚨 A421 traffic now: live incidents & roadworks

Updates every 5 min
Share A421 status: 💬 📘 X
No live incidents on the A421 right now — checking National Highways every 5 minutes, 24/7.

Is the A421 closed? Quick answers

Checked 15:21 on Tuesday 3 November 2026.

Is the A421 closed right now?

No. There is no full closure on the A421 at 15:21.

Is there an incident on the A421 right now?

No. No incidents are reported on the A421 at 15:21.

Is the A421 closed tonight?

No. No closures are planned on the A421 tonight (Tue 3 Nov, 18:00 to 06:00).

Tonight: A421 closures and diversions ›

Is the A421 closed this weekend?

Yes. The A421 has 1 full closure planned this weekend (Fri 6 Nov 18:00 to Mon 9 Nov 06:00): westbound Black Cat Roundabout to Water End Interchange carriageway closure, from Fri 6 Nov 21:00, until Mon 9 Nov 05:00. Diversion: diversion routes for construction - bypass/new on behalf of National Highways.

This weekend: A421 closures and diversions ›

Is there an accident on the A421 today?

No. No collision has been reported on the A421 since midnight.

A421 accidents today and yesterday ›

Answers use official data only: the National Highways live incident feed and their planned closure report. Times can change, so check before you set off.

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🗺️ A421 Traffic Map — Where It's Happening

Tap a pin for full incident detail. Live positions from National Highways.

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📍 Heading to… off the A421

The places people drive to most, the A421 junction for each, and live A421 incidents nearby at 15:21.

Stadium

Stadium MK

Milton Keynes, Buckinghamshire
🛣️ Via the A421
✅ No A421 incidents reported within 3 miles

MK Dons' 30,500-capacity ground near the A5 and A421 spur junction

🧭 Directions Buckinghamshire traffic

⚠️ Most Dangerous A421 Junctions

Based on DfT STATS19 police collision records. The A421 has 813 recorded collisions at 6 collision hotspots, involving 1,214 casualties (16 fatal). Take extra care here. Ranked by fatal, then serious collisions, then casualties - not by the number of collisions alone.

#1
nr Buckingham
69 collisions · 107 casualties · 5 fatal · 14 serious
Severe Blackspot
#2
nr Marston Moretaine
230 collisions · 380 casualties · 4 fatal · 36 serious
Severe Blackspot
#3
nr Bedford
138 collisions · 188 casualties · 4 fatal · 21 serious
Severe Blackspot
#4
nr Milton Keynes
319 collisions · 442 casualties · 2 fatal · 47 serious
Severe Blackspot
#5
nr Sandy
46 collisions · 83 casualties · 1 fatal · 8 serious
Severe Blackspot
#6
nr Brackley
11 collisions · 14 casualties · 6 serious
Blackspot
🔍 See the full A421 collision blackspot map →

🛒 Journey Essentials

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📰 A421 traffic news, updates and closures

This is the A421 traffic news page from UK Traffic Updates: A421 traffic now, for the whole road from Milton Keynes (M1 J13) to Bedford (A6). Every crash, breakdown, lane closure, delay and roadworks National Highways report for the A421 is listed at the top, checked every 5 minutes, 24 hours a day, with the worst on the sign and where it is: the nearest towns and the county.

National Highways has closed its Traffic England website, so the live A421 information people used to check there is here in one place: today's A421 incidents, A421 closures tonight from their daily closure report, A421 roadworks, A421 accidents today, the junction-by-junction status and a live map. Drivers can report what they see as it happens.

Want A421 traffic updates sent to you? Pick the free daily road summary or Early Warning alerts for the roads you drive. For every other motorway and A-road, see live UK traffic now.

❓ A421 Traffic — Frequently Asked Questions

Is the A421 closed today?

Any A421 closure appears in the live feed above within minutes of National Highways reporting it, including tonight's overnight roadworks closures.

Is there traffic on the A421 today?

The live feed above shows every incident, delay, roadwork and overnight closure on the A421, updated every 5 minutes, 24 hours a day, from National Highways.

Is there an incident on the A421 right now?

Every live incident on the A421 — police incidents, obstructions, breakdowns, debris, collisions and closures — appears in the live feed above within minutes of National Highways reporting it, updated every 5 minutes, 24 hours a day.

What is the worst time to use the A421?

The A421 is typically busiest during morning rush hour (07:00–09:00) and evening rush hour (17:00–19:00) on weekdays.

Are there roadworks on the A421 right now?

Roadworks and overnight closures on the A421 are listed above and at /traffic/a421/roadworks/, taken from the National Highways daily closure report.

What roads connect to the A421?

The A421 connects to: M1, A6, A428.

Where can I get A421 traffic news and updates?

Right here. This A421 traffic news page shows A421 traffic now: every live incident, delay, closure and roadworks National Highways report, updated every 5 minutes, 24 hours a day, with tonight's planned closures, junction-by-junction status and a live map. For A421 traffic updates sent to you, sign up on this page for the free daily road summary or Early Warning alerts for the roads you drive.

Is there an accident on the A421 eastbound or westbound today?

Each side has its own live page: the A421 eastbound and the A421 westbound each list every accident, breakdown, closure and roadworks on that carriageway, updated every 5 minutes, 24 hours a day, from National Highways. The panel at the top of this page shows both sides at a glance.

📊 A421 Status Summary

0
Active incidents
0
Severe/serious
0
Roadworks
15:21
Last updated
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ℹ️ A421 Road Details

Length
25 miles
From
Milton Keynes (M1 J13)
To
Bedford (A6)
Type
A-road
AM Rush
07:00–09:00
PM Rush
17:00–19:00

📍 Key A421 Locations

Milton Keynes Bedford

🔗 Roads Connecting to the A421

M1 M1 trafficM1 Motorway Live → A6 A6 trafficA6 Trunk Road Live → A428 A428 trafficA428 Trunk Road Live →

🛣️ A421 Services & Motorway Stops

No services directly on the A421. Browse all services →

🔗 Related Tools

🛣️My Commute — save your route NEW 🚧A421 Roadworks View → 🕵️Was I Affected? Check → 🔄Route Checker Plan → 📋Incident Archive Browse → 🗺️Live Map View →

📱 Follow A421 traffic updates

Daily A421 incidents, posted across all four channels.

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Junction

DfT STATS19 police collision records

0
Collisions
0
Fatal
0
Serious
0
Slight
🔍 Full blackspot map →
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Know before you go on A421

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🚛 Car recovery along the A421

Broken down on the A421? Pick the nearest town and call a local firm direct:

On a motorway? If you can, get onto the hard shoulder or into an emergency area, leave by the left-hand doors and wait behind the barrier. Stuck in a live lane: stay in the car with your seatbelt on and hazard lights on, and call 999.

🆘 Send one free requestAll breakdown services