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M4 COLLISION | EB | 2 OF 3 LANES CLOSED J4 (Heathrow / A408) – J3 (Hayes / A312) GREATER LONDON | NEAR: Southall | Hounslow | West Drayton | Harlington First reported after 14:00 BST | 10-OCT-26 Active | Lane Closures | Delays Building Expected clear ~15:18 BST The M4 is down to one

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M4 right nowUpdated 20:47

  • ObstructionClosed Westbound J8–J10 · near Twyford
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About the M4

  • M4 Motorway · 190 miles
  • London (Chiswick) → Pont Abraham (Wales)
  • Passes London, Slough, Reading, Newbury, Swindon, Bristol, Cardiff, Swansea
  • Busiest 07:00–09:30 and 16:30–19:30
  • Connects with
    M25M32M48M5A34A46
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M4 VEHICLE FIRE | BOTH DIRS | CLOSED AT J19 (M32 Interchange / Hambrook / Frenchay) SOUTH GLOUCESTERSHIRE | NEAR: Yate | Kingswood | Frampton Cotterell | Chipping Sodbury First reported after 08:00 BST | 12-OCT-26 Active | Full Closure Both Directions | Severe Delays | 60+ Min Delays | RM4 INCIDENT | BOTH DIRECTIONS AFFECTED | DELAYS / RESTRICTIONS | BETWEEN J18 (TORMARTON / BATH / STROUD / A46) & J19 (M32 / BRISTOL) SOUTH GLOUCESTERSHIRE | NEAR: Tormarton / Old Sodbury / Pucklechurch / Hambrook / Winterbourne / Bristol REPORTED AFTER: 15:00 BST | ONGOING AS OF 16:00 BSM4 COLLISION | WB CLOSED | EB 1 of 3 LANES CLOSED J16 (Swindon West / A3102 / Wootton Bassett) – J17 (Chippenham / A350 / A429) WILTSHIRE | NEAR: Swindon | Chippenham | Calne | Malmesbury First reported before 03:00 BST | 01-OCT-26 Active | Road Closed WB | Eastbound Lane Closed | Expect

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We detected congestion building on the M4 212 minutes before this incident was officially reported.
In the last 30 days, we've detected 423 incidents on the M4 an average of 2651 minutes early.
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