Slough Roadworks: M25 to M4 Link Shut for Four Nights

Slough roadworks, checked against the official sources on Tuesday 22 September 2026. Four things matter now.

• The M25 link onto the M4 at junction 4B closes on four nights running, from tonight to Friday night.
• Albert Street is due to shut for the whole weekend, under an order the council has proposed but not yet published as made.
• Banbury Avenue on the trading estate is still shut, to 5 October.
• The whole A4 through the borough remains a 20mph road until March 2028.

The M25 link onto the M4 shuts on four nights

National Highways publishes a rolling seven-day closure report, republished twice daily on working days. The edition covering Monday 21 to Sunday 27 September 2026 was last updated at 15:30 on 21 September, and one closure in it repeats on four consecutive nights.

The M25 anti-clockwise exit slip road and link road at junction 15, onto the M4 in both directions at junction 4B, is closed overnight on Tuesday, Wednesday, Thursday and Friday. National Highways gives the reason as resurfacing, with the diversion over its own network.

That is the movement Slough traffic uses coming down the M25 from Uxbridge and the M40 to join the M4 at Colnbrook. On those four nights it is not available in either direction.

Two other things follow from that table.

• Junction 7 loses both westbound slip roads on Thursday night, which matters for Cippenham and the western end of the trading estate. The reason given is drainage work.
• The M4 into London closes overnight on three nights, westbound between junctions 1 and 3 and eastbound between 3 and 1, with the diversion over local authority roads.

Nothing in the report closes junction 5 at Langley or junction 6 for the town centre this week.

Albert Street: a weekend closure that is still only proposed

Slough Borough Council has published a notice of intent to close Albert Street from its junction with Windsor Road to its junction with Upton Park. If the order is made, it comes into operation at 00:01 on Saturday 26 September and the works are expected to be finished by 23:59 on Sunday 27 September.

Two points of caution, both from the paperwork itself.

• The notice is a proposed order, dated Friday 31 July 2026, and the council has not published a sealed order for it. It is an intention rather than a decision.
• The council says an alternative route will be signed, with advance warning notices on site, and that access will be kept for residents and businesses.

If you park on Albert Street, the advance signs on the street are the thing to read, not this page. The notice is listed on the council’s temporary orders page.

Banbury Avenue is shut until 5 October

The closure runs on Banbury Avenue, Slough Trading Estate, from its junction with Dundee Road to number 8, for crane work by Select Plant Hire, part of Laing O’Rourke.

• Primary dates: 7 September to 5 October 2026.
• Back-up dates: 5 October to 1 November 2026, if the work is postponed by weather.
• A signed diversion is in place.
• Pedestrian access to properties is not affected.

The contractor’s notice warns that once the closure goes in it cannot be lifted until the work is finished. The legal instrument is the Slough Borough Council (Banbury Avenue) Order 2025, Order 42 of 2025, operative from 1 December 2025 for 18 months. The 2026 dates exist only in the contractor’s letter, not in the order itself.

The A4 is a 20mph road, and the order runs to 2028

This is still the biggest change on Slough’s roads, and it was made with a statutory notice rather than an announcement.

Slough Borough Council’s Order 18 of 2026 varies the speed limit on the A4 Bath Road, High Street and Wellington Street from 30mph to 20mph in both directions. It runs from the borough’s western boundary, about 40 metres west of the Huntercombe Lane North and Huntercombe Lane South junction, to a point 215 metres east of Wexham Road. That is effectively the A4 across the whole borough.

The order does four things:

• drops the limit to 20mph on the A4 and on Farnham Road, from the A4 to Whitby Road
• allows road closures on the same two stretches
• bans pedestrians and cyclists from the footway inside the works area
• allows a contraflow on the A4, running westbound traffic on the eastbound carriageway and the reverse, under controlled traffic management

It came into operation at 00:00 on Monday 14 September 2026 and lasts 18 months. The works are expected to be finished by 23:59 on Tuesday 14 March 2028.

This is a temporary works order, not a new permanent limit. It exists to let the A4 cycle lane be built, and on its own terms it expires when the works finish.

Two closures coming, and one is nearly two months long

Deal Avenue is the one to note. The order comes into operation at 00:01 on Monday 19 October, with works expected to be complete by 23:59 on Friday 11 December 2026. That is close to eight weeks with no traffic passing between Dover Road and Henley Road. The council says an alternative highway will be available and diversions signed on site. The notice was published on 18 September through the Public Notice Portal, where it was still listed and not expired when we checked on 22 September. It does not appear on the council’s own orders pages.

Albion Close is a single night. Chevron Traffic Management’s letter to residents says a mobile elevating work platform will set up in the road on 3 October between 23:30 and 06:00 for maintenance and upgrade work on the telecoms mast.

What is being built on the A4, and how long it is meant to take

The order above exists because of the A4 cycle lane. The council secured £10.4 million from the Department for Transport and Active Travel England for a two-way cycle lane, about 2.5 metres wide and mostly segregated, running alongside the A4 Bath Road from the Huntercombe Lane crossroads to Uxbridge Road. It is being built in three phases: Huntercombe Lane North to Dover Road, Dover Road to Pitts Road, then Pitts Road to Uxbridge Road via the High Street and Wellington Street.

The council publishes a provisional timeline for the major highway works, section by section. It runs to May 2028, and it is the single most useful document on the scheme if you drive or cycle the A4.

The provisional dates, as the council publishes them:

• Huntercombe Lane crossroads to Goldsworthy Way: 12 January to 31 March 2026
• St Andrews Way to Elmshott Lane and Station Road: July to November 2026
• Elmshott Lane to Burnham Lane: November 2026 to May 2027
• Tuns Lane to Montem Lane: November 2026 to May 2027
• Burnham Lane to Dover Road: April to July 2027
• Dover Road to the Pitts Road crossing: June 2027 to April 2028
• Montem Lane to Stoke Poges Lane: May 2027 to March 2028
• Stoke Poges Lane to Wexham Road: March to May 2028

The council warns that the programme may change and that traffic management plans are subject to change at short notice.

Its A4 works diary has not moved since 7 September, which is 15 days. Three things from that entry are still current, and one of them has a date this week:

• Ducting for new traffic signals continues at the St Andrew’s Way junction with Bath Road. Works at that junction are expected to run until early December, and include new crossing points, new signals, revised islands and the closure of the service road that comes out into St Andrew’s Way.
• A 28-day concrete curing period is running on the service road by the Mini garage. Resurfacing follows once it is complete.
• The new entry into that service road, coming off the Huntercombe roundabout, is expected to be open by 28 September. That is next Monday, and the council has published nothing since to say whether it is on track.

Farnham Road: 49 days with no update

Destination Farnham Road is rebuilding the A355 from the Bath Road junction north through the shopping stretch. It started on 17 November 2025 and it is still the main source of delay in the borough. Farnham Road from the A4 to Whitby Road also sits inside the A4 order, so that stretch is 20mph too.

Two dates from the council’s own updates are the ones to plan around.

• The Three Tuns junction is on temporary lights for six months. The update of 15 July 2026 records that the switch was made at the weekend of 11 and 12 July, which runs the six months to roughly mid-January 2027.
• The Bath Road to Farnham Road section runs to approximately mid-October. Work on that stretch started on 22 July 2026 and covers realignment of the central island, drainage, ducting, footway and carriageway works.

The council also confirms that the dedicated left-turn lane from Bath Road, outside the Tuns pub, into Farnham Road is closed and will not be reinstated once works are complete.

Here is the honest position on the rest of it. The Destination Farnham Road updates page has not been touched since 4 August, which is 49 days. Its own project page tells residents to check back monthly. The last entry has work moving up Farnham Road south of the roundabout in stages for kerbing and footways, and continuing by Metro Bank to remove the central island and realign the carriageway. Anything more recent is not on the record, and we are not going to guess at it.

The £9.3 million for the scheme came from the Department for Levelling Up, Housing and Communities in February 2023. It is not resurfacing: the finished road is meant to carry a 20mph limit through the shopping area, two-way cycle routes, rebuilt crossings, upgraded lighting, better bus stops, revised parking, park improvements and sustainable drainage.

Five other major highways schemes are live or in preparation alongside it: the Poyle Road bus gate, Stoke Road area regeneration highway works, High Street Langley widening and junction signalisation, Slough Mass Rapid Transit Phase 2, and the Colnbrook and Poyle 20mph and Horton Road traffic calming proposals.

What has finished, and what we could not confirm

The telecoms work on Bath Road for euNetworks, which banned the right turn into Ledgers Road, was scheduled by JSM Group Services for 19 and 20 September and those dates have passed. The sealed order behind it, the Slough Borough Council (Bath Road) Order 2026, Order 6 of 2026, still runs to late 2027, so further lane closures can be taken under it without a fresh order. The council has published nothing to say the work is complete.

The order covering 1.2 kilometres of National Cycle Network route 461, from the borough boundary next to 93 Wiltshire Avenue in SL2 to a point 40 metres south of the Belfast Avenue junction in SL1, said the works were expected to be complete by 23:59 on Sunday 13 September 2026. Nine days on, the council has published nothing to confirm that they were. The order itself was made for six months from 20 July, so it can still stand. Note that it closes the cycleway, not Belfast Avenue.

The parking rules that changed in August, and are still in force

Three orders made by Slough Borough Council came into force on 21 August 2026, all published as statutory notices signed by Matthew Hooper, the council’s Director of Environment and Highways. They are settled now, but they are recent enough that plenty of drivers have not caught up with them.

Waiting and loading restrictions changed on 25 roads. Amendment No. 57 altered waiting and loading restrictions and parking places on parts of these roads, and updated existing orders covering controlled parking zones B and E:

• Albert Close, Albert Street, Alpha Street South
• the Bath Road service road in front of numbers 135 to 147
• Bishops Road, Castle Street, Charter Close, Church Street, Clifton Road
• Glentworth Place, Grove Close, Hanover Close
• Hencroft Street North, Hencroft Street South, Herschel Street
• the High Street Chalvey service road in front of numbers 15 to 31
• Mere Road, Merton Road, Osborne Street, Park Street
• St Laurence Way, Sussex Place, The Grove, Upton Park, Victoria Street

One caution. The notice was headed “(PROPOSED ORDER)”, but its own text said the council made the order on 20 August and that it came into force on 21 August. Check the plans on the council’s orders page before you assume the lines outside your door have changed.

Elmhurst Road in Langley now has resident permit parking, plus waiting and loading restrictions at all times next to number 1a. Permits are available to the odd numbers 1a, 1 to 33, 33a and 35 to 47 on the north side, and the even numbers 2a and 2 to 48 on the south side.

A 40mph order covers seven roads, but nothing changed on the ground. The council consolidated its historic 40mph limits into one order covering Wexham Road, Uxbridge Road (A412), Sutton Lane, Hurricane Way, Hollow Hill Lane, Slough Road (A332) and Ditton Park Road. Its own statement of reasons calls it an update and consolidation of historic orders.

The routes that carry Slough

The borough is 32 square kilometres and almost every journey uses one of five things.

• The A4 Bath Road runs the length of the borough east to west, through the town centre and past the trading estate. It is the road that fails first when the M4 closes, and it is now 20mph along its whole length here.
• The A355 Farnham Road is the main north-south route, up towards Farnham Royal and Beaconsfield. It is the one being rebuilt.
• The M4 runs along the south. Junction 5 serves Langley, junction 6 the town centre, junction 7 the west of the borough, and junction 4B is the M25 interchange to the east.
• The A412 runs south through Langley to Datchet and north to Uxbridge.
• The M25 is minutes away to the east at Colnbrook and Poyle, which is why a problem at M25 junction 14 or 15 becomes a Slough problem within the hour.

Where we check, and where you can check

• Slough Borough Council’s temporary traffic orders and permanent orders, which carry the sealed orders, the notices of intent and the contractors’ letters.
• The National Highways seven-day closure report for the M4 and M25, republished twice daily on working days.
• The council’s A4 cycle lane and Destination Farnham Road project pages.
• The Public Notice Portal, which sometimes carries a Slough order before the council’s own pages do.

More Slough information: bin collection days, parking in Slough, council tax bands and planning applications.