Are there any road closures on the A420 today?

This page shows UK-filtered current and planned disruption records on the A420, supplied through ClearRoute with source schedule details where available.

Where does the A420 road closure data come from?

A420 road closure data comes from official UK sources: Street Manager, National Highways, D-TRO, Traffic Scotland, Traffic Wales, and TrafficWatchNI. All data is published under the Open Government Licence v3.0.

How far in advance can I see A420 road closures?

Road Closures UK shows A420 closures up to 90 days in advance.

Can I get email alerts for A420 road closures?

Yes. Visit the Get Alerts page on Road Closures UK and enter your email address and road name.

A420 Road Closures Today & Roadworks

Check reported current and planned A420 road closures, roadworks and lane restrictions. Source schedule times, permit references, promoters and highway authority details are shown where available.

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Verified route profile

About the A420

OS Open Roads reference

This page is tied to the A420 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

56 mi · 90 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 West

Derived from the road network’s mapped reference coordinate.

Local reference

Swindon

Wiltshire

Route context for A420 closures

The route’s mapped reference point falls in Wiltshire, near Swindon. 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.

11 closures found (filtered)

UK ClearRoute records · source times shown

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Show:Impact:Table view:Sort incidents

			End		Permit Ref	Status
closure — GERMAINS LANE AROUND TO EAST NORTH EAST C179 TO A420, SLAUGHTERFORD Bath	—	—	—	6 Oct 2026 12:38	—	mediumMedium impactActiveActive NowStarted: — Ends: —
closure — A420 FORD NORTH C151 TO THE STREET CASTLE COMBE, CASTLE COMBE Bath	—	—	—	1 Oct 2026 15:32	—	mediumMedium impactActiveActive NowStarted: — Ends: —
closure — SOUTHBOUND ENTRY SLIP ROAD A420 CUMNOR, OXFORD Oxford	—	—	—	29 Sept 2026 12:22	—	mediumMedium impactActiveActive NowStarted: — Ends: —
roadworks — NORTHBOUND A420 BETWEEN CUMNOR AND NORTH HINKSEY, OXFORD Oxford	—	—	—	29 Sept 2026 12:19	—	mediumMedium impactActiveActive NowStarted: — Ends: —
roadworks — SOUTHBOUND A420 BETWEEN NORTH HINKSEY AND CUMNOR, OXFORD Oxford	—	—	—	29 Sept 2026 11:23	—	mediumMedium impactActiveActive NowStarted: — Ends: —
closure — A420 FORD NORTH C151 TO THE STREET CASTLE COMBE, CASTLE COMBE Bath	—	4 Oct 2026 23:00	15 Oct 2026 23:00	9 Jul 2026 11:41	—	mediumMedium impactActiveActive NowStarted: 4 Oct 2026 23:00 Ends: 15 Oct 2026 23:00
roadworks — A420 FORD WEST TO PRESTGROVE, FORD Bath	—	12 Oct 2026 08:52	—	8 Jul 2026 16:09	—	mediumMedium impactActiveActive NowStarted: 12 Oct 2026 08:52 Ends: —
roadworks — A420 FORD, FORD Bath	—	12 Oct 2026 08:52	—	8 Jul 2026 16:05	—	mediumMedium impactActiveActive NowStarted: 12 Oct 2026 08:52 Ends: —
roadworks — A420 FORD TO GIDDEAHALL, FORD Bath	—	12 Oct 2026 08:52	—	8 Jul 2026 16:02	—	mediumMedium impactActiveActive NowStarted: 12 Oct 2026 08:52 Ends: —
roadworks — UNNAMED-A420-SINGLE CARRIAGEWAY (41601609), FARINGDON Swindon	—	13 Sept 2026 23:00	15 Apr 2027 23:00	23 Jun 2026 10:55	—	mediumMedium impactActiveActive NowStarted: 13 Sept 2026 23:00 Ends: 15 Apr 2027 23:00
roadworks — UNNAMED-A420-SINGLE CARRIAGEWAY (41601634), FARINGDON Swindon	—	13 Sept 2026 23:00	15 Apr 2027 23:00	23 Jun 2026 10:48	—	mediumMedium impactActiveActive NowStarted: 13 Sept 2026 23:00 Ends: 15 Apr 2027 23:00

A420 — Live Statistics

Based on all 19 records for A420, including any hidden by the filters above. Select a number to filter the matching records above.

By Severity

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Road Closures on the A420

Road Closures UK shows 19 current and planned disruption records associated with the A420, sourced from Street Manager and National Highways. The record type distinguishes full closures from roadworks and lane restrictions where supplied. Each record includes the available permit reference, promoter, responsible highway authority and scheduled dates. Sign up for free email alerts for new matching records.

Scope: UK-only records supplied through ClearRoute for A420. “Current” is determined from available source event times; planned reports and records without usable event times are identified by their visible schedule details. The site-wide connection/cache status is separate from each record’s source timing.

What these local A420 records show

Of the 19 locally scoped records for A420, 6 have source times indicating it is scheduled active and 8 are scheduled to start later. 5 reports do not have usable source schedule times. Locations affected include Oxford, Bath and Swindon. Recorded severity is medium (19). The latest scheduled end date on this page is 16 April.

Live closure details

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

Frequently Asked Questions

This page shows UK-filtered current and planned disruption records reported for the A420 through ClearRoute. “Current” depends on available source schedule times; use the type filter to distinguish full road closures from roadworks and lane restrictions, then open a record for its permit reference, promoter and highway authority.

A420 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 can show reported full closures, roadworks and lane restrictions on the A420 up to 90 days in advance. Street Manager permits are submitted by councils and utility companies before work begins, so you can often see planned work weeks or months ahead of the start date.

Yes. Use the date and type filters on this page to review reported records scheduled for today, then open a record to confirm its available start and end times. A record is not treated as a live closure solely because it is listed for today.

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 A420. No account required — unsubscribe at any time.

→Nearby A-Roads

🛣A30 🛣A35 🛣A36 🛣A37 🛣A38 🛣A39 🛣A40 🛣A303 🛣A338 🛣A341

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