Location: southbound between junctions J4 (High Wycombe) and J3 (Loudwater) .
Lane Closures : The hard shoulder and lane 1 are closed.
Due to: Broken down vehicle.
Time To Clear : The event is expected to clear between 08:30 and 08:45 on 28 January 2026.
Normal traffic conditions are expected between 09:15 and 09:30 on 28 January 2026.
Lanes Closed : There is one of three lanes closed.
Nearest town: 7.99 miles from Horsenden.

Swakeleys Roundabout - There is a broken down car on the eastbound on slip road to the A40.
All lanes are open.
Nearest town: 19.71 miles from Horsenden.

Location: southbound entry slip from the A44 .
Due to: Congestion.
Normal traffic conditions are expected between 10:45 and 11:00 on 28 January 2026.
Nearest town: 19.18 miles from Horsenden.

Location: clockwise exit slip at junction J17 (Maple Cross) .
Due to: Congestion.
Normal traffic conditions are expected between 10:30 and 10:45 on 28 January 2026.
Nearest town: 15.67 miles from Horsenden.

Location: southbound between the A44 and the junction with the A420 .
Due to: Congestion.
Normal traffic conditions are expected between 10:45 and 11:00 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 19.18 miles from Horsenden.

Location: southbound entry slip from the A44 .
Due to: Congestion.
Normal traffic conditions are expected between 10:15 and 10:30 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 19.18 miles from Horsenden.

Location: northbound between the junctions with the A5183 and the A4012 .
Due to: Congestion.
Normal traffic conditions are expected between 10:00 and 10:15 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 19.08 miles from Horsenden.

Location: southbound between the junctions with the A4146 South and the A4012 .
Due to: Congestion.
Normal traffic conditions are expected between 10:45 and 11:00 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 19.72 miles from Horsenden.

Location: westbound between the junctions with the M1 and the A4147 .
Due to: Congestion.
Normal traffic conditions are expected between 09:30 and 09:45 on 28 January 2026.
Nearest town: 18.92 miles from Horsenden.

Location: northbound between the junctions with the A5183 and the A4012 .
Due to: Congestion.
Normal traffic conditions are expected between 09:15 and 09:30 on 28 January 2026.
Nearest town: 19.08 miles from Horsenden.

Location: northbound at the junction with the M40 .
Due to: Congestion.
Normal traffic conditions are expected between 09:00 and 09:15 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 7.96 miles from Horsenden.

Location: southbound between the junctions with the A4155 and the A308 .
Due to: Congestion.
Normal traffic conditions are expected between 09:30 and 09:45 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 10.88 miles from Horsenden.

Location: anticlockwise exit slip at junction J20 (Hemel Hstead) .
Due to: Congestion.
Normal traffic conditions are expected between 09:00 and 09:15 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 17.82 miles from Horsenden.

Location: southbound exit slip at junction J4 (High Wycombe) .
Due to: Congestion.
Normal traffic conditions are expected between 08:30 and 08:45 on 28 January 2026.
Nearest town: 7.78 miles from Horsenden.

Location: northbound entry slip at junction J1 (Slough) .
Due to: Congestion.
Normal traffic conditions are expected between 08:45 and 09:00 on 28 January 2026.
Nearest town: 18.59 miles from Horsenden.

Location: southbound exit slip to the A423 north of Kennington.
Due to: Congestion.
Normal traffic conditions are expected between 08:30 and 08:45 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 17.26 miles from Horsenden.

Location: anticlockwise between junctions J20 (Hemel Hstead) and J18 (Rickmansworth) .
Due to: Congestion.
Normal traffic conditions are expected between 08:30 and 08:45 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 16.03 miles from Horsenden.

Location: anticlockwise exit slip at junction J20 (Hemel Hstead) .
Due to: Congestion.
Normal traffic conditions are expected between 08:30 and 08:45 on 28 January 2026.
Nearest town: 17.82 miles from Horsenden.

Location: southbound between the junctions with the M40 and the A44 .
Due to: Congestion.
Normal traffic conditions are expected between 08:00 and 08:15 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 18.27 miles from Horsenden.

Location: southbound between junctions J9 (Dunstable A5) and J8 (Hemel Hstead) .
Due to: Congestion.
Normal traffic conditions are expected between 08:30 and 08:45 on 28 January 2026.
Nearest town: 19.32 miles from Horsenden.

Location: northbound exit slip to the A423 north of Kennington.
Due to: Congestion.
Normal traffic conditions are expected between 07:45 and 08:00 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 17.14 miles from Horsenden.

Location: southbound between junctions J5 (High Wycombe) and J4 (High Wycombe) .
Due to: Congestion.
Normal traffic conditions are expected between 08:30 and 08:45 on 28 January 2026.
Delay : There are currently delays of 15 minutes against expected traffic.
Nearest town: 7.83 miles from Horsenden.

Location: southbound between the A4146 South and the junction with the A4012 .
Due to: Congestion.
Normal traffic conditions are expected between 09:15 and 09:30 on 28 January 2026.
Delay : There are currently delays of 20 minutes against expected traffic.
Nearest town: 19.14 miles from Horsenden.

Location: anticlockwise entry slip at junction J16 (M40) From M40 South.
Due to: Congestion.
Normal traffic conditions are expected between 07:00 and 07:15 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 17.51 miles from Horsenden.

Location: northbound at junction J1 (Slough) .
Due to: Congestion.
Normal traffic conditions are expected between 07:30 and 07:45 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 18.68 miles from Horsenden.

Location: westbound between the junctions with the A437 and the M40 .
Due to: Congestion.
Normal traffic conditions are expected between 07:30 and 07:45 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 19.28 miles from Horsenden.

Location: anticlockwise between junctions J20 (Hemel Hstead) and J18 (Rickmansworth) .
Due to: Congestion.
Normal traffic conditions are expected between 08:00 and 08:15 on 28 January 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 17.17 miles from Horsenden.

Location: northbound between junctions J6 (Thame) and J8A (Thame) .
Lane Closures : The hard shoulder is closed.
Due to: Horticultural works.
Period : expect disruption until 19:00 on 28 January 2026.
Nearest town: 6.4 miles from Horsenden.

Location: northbound between junctions J6 (Thame) and J8A (Thame) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:15 on 28 January 2026 to 06:00 on 29 January 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 5.26 miles from Horsenden.

Location: southbound between the junctions with the A4012 and the A5183 .
Due to: Roadworks.
Period : expect disruption until 18:00 on 29 January 2026.
Nearest town: 19.1 miles from Horsenden.

Location: northbound between the junctions with the A5183 and the A4012 .
Due to: Roadworks.
Period : expect disruption until 18:00 on 29 January 2026.
Nearest town: 19.09 miles from Horsenden.

Location: eastbound between junctions J8 (High Wycombe) and J7 (Slough) .
Lane Closures : Lanes 3 and 4 will be closed.
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 22:00 on 28 January 2026 to 06:00 on 29 January 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 15.89 miles from Horsenden.

Location: eastbound at junction J8 (High Wycombe) .
Lane Closures : Lane three will be closed.
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 22:00 on 28 January 2026 to 06:00 on 29 January 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 15.75 miles from Horsenden.

Location: eastbound between junctions J10 (Reading) and J8 (High Wycombe) .
Lane Closures : Lanes 3 and 4 will be closed.
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 22:00 on 28 January 2026 to 06:00 on 29 January 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 16.04 miles from Horsenden.

Location: northbound.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 28 January 2026 to 06:00 on 29 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.73 miles from Horsenden.

Location: northbound.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 28 January 2026 to 06:00 on 29 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.75 miles from Horsenden.

Location: northbound.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 28 January 2026 to 06:00 on 29 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.84 miles from Horsenden.

Location: northbound between the A44 and the junction with the M40 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 28 January 2026 to 06:00 on 29 January 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 18.85 miles from Horsenden.

Location: northbound between junctions J4 (High Wycombe) and J5 (High Wycombe) .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 19:00 on 28 January 2026 to 23:59 on 2 February 2026.
Nearest town: 5.97 miles from Horsenden.

Location: southbound at junction J9 (Bicester) .
Lane Closures : Lanes 1 and 2 are closed.
Due to: Road repairs.
Period : expect disruption until 06:00 on 28 January 2026.
Lanes Closed : All lanes are closed.
Nearest town: 18.45 miles from Horsenden.

Location: northbound between junctions J3 (Loudwater) and J4 (High Wycombe) .
Lane Closures : The hard shoulder is closed.
Due to: Horticultural works.
Period : expect disruption until 23:59 on 30 January 2026.
Nearest town: 8.79 miles from Horsenden.

Location: northbound between junctions J4 (High Wycombe) and J5 (High Wycombe) .
Lane Closures : The hard shoulder is closed.
Due to: Horticultural works.
Period : expect disruption until 23:59 on 29 January 2026.
Nearest town: 6.04 miles from Horsenden.

Location: southbound between junctions J4 (High Wycombe) and J1A (Watford) .
Lane Closures : Lanes 3 and 4 will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 3 February 2026 to 7 February 2026.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 9 February 2026 to 14 February 2026.
Schedule : From 22:15 on 16 February 2026 to 06:00 on 17 February 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 11.08 miles from Horsenden.

Location: southbound exit slip at junction J8A (Thame) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 22:15 on 3 February 2026 to 06:00 on 4 February 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 10.55 miles from Horsenden.

Location: southbound between junctions J9 (Bicester) and J8A (Thame) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 22:15 on 3 February 2026 to 06:00 on 4 February 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 11.18 miles from Horsenden.

Location: anticlockwise between junctions J18 (Rickmansworth) and J16 (M40) .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 3 February 2026 to 05:30 on 4 February 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 15.98 miles from Horsenden.

Location: clockwise between junctions J16 (M40) and J17 (Maple Cross) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 3 February 2026 to 6 February 2026.
Schedule : From 23:00 on 6 February 2026 to 05:30 on 7 February 2026.
Schedule : From 22:00 on 9 February 2026 to 05:30 on 10 February 2026.
Schedule : From 22:00 on 11 February 2026 to 05:30 on 12 February 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 16.4 miles from Horsenden.

Location: southbound between junctions J2 (Beaconsfield) and J1A (Watford) .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 07:00 on 3 February 2026 to 23:59 on 4 February 2026.
Nearest town: 15.15 miles from Horsenden.

Location: northbound between junctions J8A (Thame) and J10 (Northampton) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 22:15 on 2 February 2026 to 06:00 on 3 February 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 16.98 miles from Horsenden.

Location: clockwise at junction J16 (M40) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 2 February 2026 to 05:30 on 3 February 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 17.77 miles from Horsenden.

Location: slip road to the M40 northbound from M25 north.
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 2 February 2026 to 05:30 on 3 February 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.77 miles from Horsenden.

Location: clockwise between junctions J15 (Slough) and J16 (M40) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 2 February 2026 to 05:30 on 3 February 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 18.68 miles from Horsenden.

Location: slip road to the M40 southbound from M25 north.
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 2 February 2026 to 05:30 on 3 February 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.4 miles from Horsenden.

Location: clockwise between junctions J16 (M40) and J18 (Rickmansworth) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 2 February 2026 to 05:30 on 3 February 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 15.54 miles from Horsenden.

Location: clockwise entry slip at junction J17 (Maple Cross) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 2 February 2026 to 05:30 on 3 February 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.7 miles from Horsenden.

Location: anticlockwise between junctions J16 (M40) and J15 (Slough) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 2 February 2026 to 05:30 on 3 February 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 19.2 miles from Horsenden.

Location: southbound between junctions J9 (Bicester) and J8A (Thame) .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 19:00 on 2 February 2026 to 19:00 on 6 February 2026.
Nearest town: 12.47 miles from Horsenden.

Location: southbound between junctions J2 (Beaconsfield) and J1A (Watford) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 28 January 2026 to 31 January 2026.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 2 February 2026 to 5 February 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 15.22 miles from Horsenden.

Location: southbound between junctions J1A (Watford) and J1 (Slough) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 28 January 2026 to 31 January 2026.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 2 February 2026 to 5 February 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 16.83 miles from Horsenden.

Location: northbound between junctions J1 (Slough) and J1A (Watford) .
Lane Closures : Lane three will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 06:00 from 28 January 2026 to 31 January 2026.
Schedule : Expect disruption everyday between 22:00 and 06:00 from 2 February 2026 to 5 February 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 18.34 miles from Horsenden.

Location: northbound between junctions J1A (Watford) and J2 (Beaconsfield) .
Lane Closures : Lane three will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 06:00 from 28 January 2026 to 31 January 2026.
Schedule : Expect disruption everyday between 22:00 and 06:00 from 2 February 2026 to 5 February 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 16.91 miles from Horsenden.

Location: westbound between the junctions with the A437 and the M40 .
Lane Closures : Lane three will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 06:00 from 28 January 2026 to 31 January 2026.
Schedule : Expect disruption everyday between 22:00 and 06:00 from 2 February 2026 to 5 February 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 19.46 miles from Horsenden.

Location: northbound between junctions J3 (Loudwater) and J4 (High Wycombe) .
Lane Closures : Lane three will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 28 January 2026 to 30 January 2026.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 2 February 2026 to 7 February 2026.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 9 February 2026 to 13 February 2026.
Schedule : From 22:15 on 16 February 2026 to 06:00 on 17 February 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 10.45 miles from Horsenden.

Location: northbound between junctions J1A (Watford) and J4 (High Wycombe) .
Lane Closures : Lanes 3 and 4 will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 28 January 2026 to 30 January 2026.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 2 February 2026 to 7 February 2026.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 9 February 2026 to 13 February 2026.
Schedule : From 22:15 on 16 February 2026 to 06:00 on 17 February 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 13.7 miles from Horsenden.

Location: southbound between junctions J4 (High Wycombe) and J1A (Watford) .
Lane Closures : Lanes 3 and 4 will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 3 February 2026 to 7 February 2026.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 9 February 2026 to 14 February 2026.
Schedule : From 22:15 on 16 February 2026 to 06:00 on 17 February 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 11.08 miles from Horsenden.

Location: southbound between junctions J2 (Beaconsfield) and J1A (Watford) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 1 February 2026 to 05:30 on 2 February 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 14.2 miles from Horsenden.

Location: northbound between junctions J3 (Loudwater) and J4 (High Wycombe) .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 19:00 on 1 February 2026 to 23:59 on 3 February 2026.
Nearest town: 8.24 miles from Horsenden.

Location: northbound between junctions J4 (High Wycombe) and J5 (High Wycombe) .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 19:00 on 1 February 2026 to 23:59 on 9 February 2026.
Nearest town: 5.68 miles from Horsenden.

Location: anticlockwise entry slip at junction J19 (Watford) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 31 January 2026 to 06:00 on 1 February 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.39 miles from Horsenden.

Location: clockwise exit slip at junction J19 (Watford) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 23:00 on 30 January 2026 to 05:30 on 31 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.36 miles from Horsenden.

Location: clockwise exit slip at junction J19 (Watford) .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 23:00 on 30 January 2026 to 05:30 on 31 January 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 17.27 miles from Horsenden.

Location: clockwise exit slip at junction J21 (M1) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 23:00 on 30 January 2026 to 05:30 on 31 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 19.92 miles from Horsenden.

Location: clockwise between junctions J20 (Hemel Hstead) and J21A (Watword) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 23:00 on 30 January 2026 to 05:30 on 31 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.75 miles from Horsenden.

Location: clockwise between junctions J18 (Rickmansworth) and J19 (Watford) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 23:00 on 30 January 2026 to 05:30 on 31 January 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 16.71 miles from Horsenden.

Location: clockwise exit slip at junction J20 (Hemel Hstead) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 23:00 on 30 January 2026 to 05:30 on 31 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.65 miles from Horsenden.

Location: clockwise between junctions J19 (Watford) and J20 (Hemel Hstead) .
Lane Closures : Lanes 1, 2, 3 and 4 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 23:00 on 30 January 2026 to 05:30 on 31 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.5 miles from Horsenden.

Location: northbound between junctions J4 (High Wycombe) and J5 (High Wycombe) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 22:15 on 30 January 2026 to 06:00 on 31 January 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 6.7 miles from Horsenden.

Location: southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:15 on 30 January 2026 to 06:00 on 31 January 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 11.97 miles from Horsenden.

Location: northbound entry slip at junction J1 (Slough) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:15 on 30 January 2026 to 06:00 on 31 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.6 miles from Horsenden.

Location: southbound entry slip from the A415 .
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 21:30 on 30 January 2026 to 06:00 on 31 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 19.59 miles from Horsenden.

Location: northbound between the junctions with the A44 and the M40 .
Lane Closures : Lane two will be closed.
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 20:00 on 30 January 2026 to 06:00 on 31 January 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 18.27 miles from Horsenden.

Location: southbound between the junctions with the A4130 and the A4185 .
Lane Closures : Lane one will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 30 January 2026 to 1 February 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 19.59 miles from Horsenden.

Location: slip road to the M40 northbound from M25 north.
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 28 January 2026 to 30 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.77 miles from Horsenden.

Location: southbound between junctions J4 (High Wycombe) and J1A (Watford) .
Lane Closures : Lanes 3 and 4 will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 28 January 2026 to 31 January 2026.
Schedule : From 22:15 on 2 February 2026 to 06:00 on 3 February 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 10.47 miles from Horsenden.

Location: southbound between junctions J4 (High Wycombe) and J3 (Loudwater) .
Lane Closures : Lane three will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 28 January 2026 to 31 January 2026.
Schedule : From 22:15 on 2 February 2026 to 06:00 on 3 February 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 9.53 miles from Horsenden.

Location: southbound exit slip at junction J4 (High Wycombe) .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 28 January 2026 to 1 February 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 7.79 miles from Horsenden.

Location: southbound.
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 28 January 2026 to 1 February 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 7.79 miles from Horsenden.

Location: southbound exit slip at junction J4 (High Wycombe) .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 28 January 2026 to 1 February 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 7.76 miles from Horsenden.

Location: clockwise between junctions J20 (Hemel Hstead) and J21 (M1) .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 29 January 2026 to 05:00 on 30 January 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 19.2 miles from Horsenden.

Location: southbound between junctions J9 (Dunstable A5) and J6 (Watford A405) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 29 January 2026 to 05:00 on 30 January 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 19.66 miles from Horsenden.

Location: clockwise at junction J21 (M1) .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 29 January 2026 to 05:00 on 30 January 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 19.92 miles from Horsenden.

Location: northbound between junctions J8 (Hemel Hstead) and J9 (Dunstable A5) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 18 February 2026 to 05:00 on 19 February 2026.
Schedule : From 22:00 on 18 March 2026 to 05:00 on 19 March 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 19.97 miles from Horsenden.

Location: eastbound between junctions J10 (Reading) and J8 (High Wycombe) .
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 20:00 on 2 February 2026 to 06:00 on 11 February 2026.
Nearest town: 16.04 miles from Horsenden.

Location: eastbound exit slip at junction J8 (High Wycombe) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 2 February 2026 to 7 February 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 9 February 2026 to 11 February 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 15.75 miles from Horsenden.

Location: eastbound at junction J8 (High Wycombe) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 2 February 2026 to 7 February 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 9 February 2026 to 11 February 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 15.75 miles from Horsenden.

Location: eastbound between junctions J10 (Reading) and J8 (High Wycombe) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 2 February 2026 to 7 February 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 9 February 2026 to 11 February 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 16.04 miles from Horsenden.

Location: northbound between junctions J8 (Hemel Hstead) and J9 (Dunstable A5) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 16 March 2026 to 21 March 2026.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 23 March 2026 to 28 March 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 19.27 miles from Horsenden.

Location: southbound between junctions J8 (Hemel Hstead) and J6 (Watford A405) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 16 March 2026 to 21 March 2026.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 23 March 2026 to 28 March 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 19.18 miles from Horsenden.
