Operation Brock is on the coastbound M20 between junctions 8 and 9 at 50mph until 24 August 2026. What is shut around Ashford, and which junction to use for where.

The thing to know about driving around Ashford this month is that the M20 north of the town is running as a contraflow. Operation Brock went in on 13 July and is due to stay until 24 August, which covers the whole of the school holidays. Everything else on the local network is smaller and shorter, but the Brock section changes journeys for everyone using junction 9. Here is what is on, what has finished, and which junction you actually want for where you are going.

Operation Brock: M20 junctions 8 to 9, to 24 August

National Highways installed the Operation Brock barrier on the coastbound M20 between junction 8 (Leeds Castle, Maidstone) and junction 9 (Ashford) on the evening of Monday 13 July, reopening the motorway the following day with the contraflow running. It is scheduled to stay in place until Monday 24 August 2026. The section is 13 miles long and carries a 50mph speed limit (KentOnline, 6 July 2026).

Brock is a queuing system for freight heading to the Port of Dover and Eurotunnel. HGVs are held in dedicated lanes on the coastbound carriageway, and other traffic runs in a contraflow on the London-bound side. National Highways describes the M20 as “open with Brock contraflow in operation”, with the contraflow open in both directions for non-port traffic (National Highways).

Lydden Hill Race Circuit is held in reserve as a contingency site to take car traffic temporarily if there is major disruption at the crossings. The Kent and Medway Resilience Forum’s strategic lead said of the deployment: “Our aim in deploying Operation Brock is always to reduce the impact of potential disruption to residents and businesses” (KentOnline).

What it means for you: the road is open, but it is narrower, slower and unforgiving of a missed exit. If you use junction 9 daily, add time in both directions and expect the worst of it on Friday afternoons and around ferry sailings. If you are only going as far as Maidstone or Charing, the A20 through Hothfield and Lenham is the obvious alternative and it is not motorway-fast at the best of times, so leave earlier rather than reroute in a hurry.

Which junction you actually want

Ashford is unusual in having four M20 junctions serving one town, and using the wrong one costs you ten minutes on the ring road.

The M20 junctions serving Ashford, and what each one is for Schematic of the M20 from junction 8 at Maidstone to junction 11 at Westenhanger. The Operation Brock contraflow covers the coastbound carriageway between junction 8 and junction 9. Junction 9 serves the A20 and A28 for north Ashford and the town centre. Junction 10 serves the A2070 and A292 for the town centre and the Designer Outlet. Junction 10a serves the A2070 for Sevington, Orbital Park and south Ashford. Junction 11 serves the A20 for Westenhanger and Hythe. Four M20 junctions, one town: pick the right one Schematic, not to scale. Shaded band shows the Operation Brock contraflow section, 13 July to 24 August 2026. OPERATION BROCK, 50mph J8 J9 J10 J10a J11 Maidstone, Leeds Castle A20 and A28 North Ashford, town centre, Kennington, Willesborough A2070 and A292 Town centre ring road, Designer Outlet, station A2070 Sevington, Orbital Park, south Ashford, Romney Marsh A20 Westenhanger, Hythe, Folkestone Source: National Highways; Kent County Council. Junction roles as signed on the network.
  • Junction 9 is the one most people mean by “the Ashford junction”. It feeds the A20 and the A28 for the north of the town, Kennington, Willesborough and the town centre. It is also the junction inside the Brock section, so it is the one under pressure.
  • Junction 10 puts you on the A2070 and the A292 for the ring road, the station and the Designer Outlet. If you are shopping or catching a train, this is usually quicker than junction 9.
  • Junction 10a is the newer southern junction, for Sevington, Orbital Park, Waterbrook and the roads down towards Romney Marsh.
  • Junction 11 is past the town, for Westenhanger, Hythe and the coast.

What has finished, and what is still dated

Two jobs that dominated local traffic earlier this year are done. The SGN gas main works in New Street and Somerset Road, which shut a stretch of the town centre ring road, overran by a week for engineering reasons and were completed on Friday 12 June 2026 (KentOnline). Kent County Council drainage works on the A28 Chart Road between Brunswick Road and the Matalan roundabout, which put temporary lights on one of the town’s busiest roads in early July, were scheduled to finish within that week (KentOnline).

Still running in the background is a borough-wide surface preservation programme, covered by a rolling traffic regulation notice that runs to an estimated completion of 3 September 2026. Individual road closures under it are published in advance on one.network and signed on site 14 days before they start, so the notice itself tells you nothing about your street; the signs and the map do (public notice).

The larger question hanging over Ashford’s road network is the A28 Chart Road dualling, a £30m scheme between the Matalan and Tank roundabouts that was tied to the Chilmington Green development. Its funding is now uncertain after the developer went into administration in spring 2026, which we cover in Ashford planning news.

Getting in without driving

The town centre ring road is not a pleasant thing to circle, and Ashford is one of the better Kent towns for leaving the car behind.

  • By train, Ashford International has 616 parking spaces and step-free access to all platforms, so park-and-ride-by-rail from the villages works. Times and season prices are in our Ashford trains to London page.
  • On foot, the station, the town centre and the Designer Outlet sit within about a mile of each other, which is why the outlet’s own advice to shoppers is to walk in from the centre rather than move the car.
  • By bus, the station forecourt doubles as the town’s main bus interchange, so connections from Kennington, Park Farm and Tenterden all land in the same place.

How to check before you set off

  • one.network is where Kent County Council publishes live and planned street works, and where the borough’s preservation-treatment closures appear before the signs go up.
  • National Highways holds the current M20 and Operation Brock position, including whether the barrier is in or out.
  • Kent County Council roadworks covers everything on the local network that is not motorway.

Dates on this page were checked on 9 August 2026. Closures change at short notice, particularly when a Channel crossing disruption pulls Operation Brock forward or holds it in place longer, so check the live sources on the day.

Sources