⚠ Closure
M4 Traffic

M4 Motorway Services

0Accidentsnone in National Highways’ incident data — but the overhead signs show M4 J21 - J23 CLOSED — see the signs5Roadworks activelive on the M4 right now — see details12Plannedscheduled on the M4 — see details

Live M4 traffic data from National Highways · updated 02:12 Thu 17 Sept 2026

M4

All the Services on the M4

We all need to stop on a long drive: for a rest, a drink or something to eat, the toilets, fuel, or to charge an EV. Our M4 services pages help you find the nearest services on the M4, which side of the motorway you can reach them from, and what you will find when you get there.

There are eleven service areas on the M4, from Heston on the edge of London to Pont Abraham where the motorway ends in west Wales. Five are in England and six in Wales.

Services where the two sides are separate

Most M4 services can be reached from either direction. At Heston, Reading, Membury and Leigh Delamere there is a site on each side of the motorway. At Reading the two sides are not linked; at Leigh Delamere a footbridge joins them.

All M4 services, east to west

ServicesJunctionOperator
HestonJ2–3Moto
ReadingJ11–12Moto
ChieveleyJ13Moto
MemburyJ14–15Welcome Break
Leigh DelamereJ17–18Moto
MagorJ23ARoadchef
Cardiff GateJ30Welcome Break
Cardiff WestJ33Moto
Sarn ParkJ36Welcome Break
Swansea WestJ47Moto
Pont AbrahamJ49Roadchef

Severn View is not on the M4

Severn View services is on the M48, at its Junction 1, on the old Severn Bridge route. If you are on the M4 heading into Wales, the first services you reach is Magor.

Check the traffic before you stop

Check the latest M4 traffic news before you plan a break, so a closure or queue does not come between you and your stop. In Wales the M4 is run for the Welsh Government by Traffic Wales, not National Highways. Our live news comes from National Highways, so it may not include incidents on this part of the motorway.

Service area details were checked against more than one published source in September 2026. Outlets and facilities change, so check with the operator if you are relying on something in particular.

M4traffic.co.uk is dedicated to the latest M4 traffic news, checked every five minutes, 24 hours a day. The M4 meets the M25 at Junction 4b near Heathrow and the M5 near Bristol — see M25 Traffic and M5 Traffic.