RCRC UK

A421 Road Closures — Permits & Works

Current and upcoming A421 road closures and roadworks. Permit references, promoters, and highway authority information.

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Verified route profile

About the A421

OS Open Roads reference

This page is tied to the A421 reference in Ordnance Survey’s OS Open Roads network for Great Britain. The route profile below is separate from the live closure records and helps identify the mapped road network this page covers.

Mapped length

53 mi · 85 km

Summed from classified OS road links, not a driving-distance estimate.

OS classification

A Road

Recorded in the verified route dataset for this road reference.

Dataset region

South East

Derived from the road network’s mapped reference coordinate.

Local reference

Milton Keynes

Milton Keynes

Route context for A421 closures

The route’s mapped reference point falls in Milton Keynes, near Milton Keynes. It is an orientation point, not a claimed route endpoint. The live list above remains the source for current and planned closure timings, permit details and affected locations.

Route reference data: Ordnance Survey OS Open Roads, a high-level Great Britain road network dataset.

0 closures found (filtered)

Updated every 15 minutes
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A421 — Live Statistics

Based on all 1 record for A421, including any hidden by the filters above.

0
Active now
1
Planned
0
Require TTRO
1
Avg. days

By Severity

No active closures found

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Road Closures on the A421

Road Closures UK shows all 1 current and planned closures on the A421, sourced from Street Manager and National Highways. Each record includes the full permit reference number, the promoting organisation, the responsible highway authority, and the scheduled start and end dates. Sign up for free email alerts to be notified of new A421 closures as soon as they are added.

What the current A421 records show

The 1 record currently published for A421 is scheduled to start later rather than active today. Recorded severity is medium (1). The latest scheduled end date on this page is 3 September.

Live closure details

Open a closure for its permit reference, exact timings and affected-road information.

Frequently Asked Questions

This page shows all current and planned road closures on the A421, updated every 15 minutes from official UK government sources including Street Manager and National Highways. Click any closure to see full permit details, including the permit reference number, promoting organisation, and highway authority.
A421 road closure data comes from official UK sources: Street Manager (councils and utility companies), National Highways (motorways and major A-roads), D-TRO (Digital Traffic Regulation Orders), Traffic Scotland, Traffic Wales, and TrafficWatchNI. All data is published under the Open Government Licence v3.0.
Road Closures UK shows A421 closures up to 90 days in advance. Street Manager permits are submitted by councils and utility companies before work begins, so you can often see closures weeks or months ahead of the start date.
Yes. Enter your email address in the alert signup box above and we will notify you by email when new closures are added to the A421. No account required — unsubscribe at any time.

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