Drivers using the M1 heading north out of London could be hit by overnight closures and diversions for the next three weeks.

The northbound carriageway of the M1 will be closed overnight between Junction 1 at Brent Cross roundabout (A406) and Junction 3 (London Gateway Services) until early May.

All slip and link roads leading to and from the M1, including the filter lanes from the westbound carriageway of the A406 at Brent Cross roundabout, will also be closed.

But heavy goods vehicles (HGVs) can use the outside lane during inside lane closures, between 260 metres north of the slip road at Junction 2 and 130 metres north of the exit of the northernmost slip road at London Gateway Services.

The reason for the closures is for the safety of contractors working on footbridges.

Work is expected to take three weeks starting on or after today (Saturday, April 13).

The closures may start from 9pm and run until 11am, under a temporary traffic order by National Highways.

Traffic affected by the closures will be diverted using the A406, A41, A1 and the A41 to Junction 4 of the M1.

The altered routes, lane running, and diversion points will be marked clearly with signs while work is carried out.

The order became effective on Friday (April 12) and will continue for up to 18 months, ending only once work is finished.

For ongoing updates, drivers are advised to visit the National Highways website at

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