M25/M4 link road closure ends this morning after overnight works

A planned closure affecting the link road from the M4's Junction 4B eastbound onto the M25 at Junction 15, alongside works on the M25 clockwise between Junctions 15 and 16, was scheduled to run overnight and clear by 08:00 on Wednesday, according to the estate's own traffic-monitoring trigger. That trigger — a roadworks alert Wayne's instruments picked up — is the reason this story exists at all. It flagged the closure as "ACTIVE now until today 08:00," meaning any driver routed through that stretch of the M4/M25 interchange overnight would have needed an alternative route, with normal running expected to resume from mid-morning. Beyond that trigger, however, the reporting material available to back it up is poor. The source fetched for this piece, M25traffic.co.uk, is a general-purpose roadworks aggregator that describes itself as pulling data from Traffic England, the official Highways Agency feed, and presents itself as "one of the most reliable sources of roadworks updates" [1]. But the page delivered for this report contains no usable detail on the specific J15/J16 and M4 link road closure itself — no confirmed timings beyond what the trigger already stated, no diversion routes, no stated reason for the works, and no named contractor or scheme. What the page does contain is a long list of generic timestamps — "Road closed," "Slip road closed" — all logged at the same moment, 07:08 to 07:10 on 19 August 2026, with no locations attached to most of the entries [1]. That pattern reads as a template or listings page rather than a specific incident report, and it does not on its own verify what was closed, why, or for how long. The site's own text also concedes the list may return "nothing matching those filters" at any given time [1], underlining that this is a live, changeable aggregator rather than a fixed record of this one closure. So the honest position is this: the estate's instrument said the M4-to-M25 link closure was active and due to clear at 08:00 today. The open-web material gathered to stand that story up does not independently confirm the closure's cause, duration, or knock-on congestion — it only confirms that M25traffic.co.uk was showing a wave of unspecified closure entries at almost exactly the same time the trigger fired. Whether those entries relate to the same works is unconfirmed. Drivers who rely on that stretch of the M4/M25 interchange for an early commute should treat the 08:00 clearance time as provisional rather than gospel, given the underlying detail is thin. Traffic England's official live status — not this aggregator page — would be the more reliable check before setting off. What to watch next: confirm via Traffic England or National Highways whether the J4B–J15 link road has reopened as scheduled, and whether any residual congestion is reported on the M25 clockwise between Junctions 15 and 16 through the morning peak.