Swakeleys Roundabout - There is a broken down car on the eastbound on slip road to the A40.
All lanes are open.
Nearest town: 9.52 miles from Amersham Common.
Location: eastbound between the junctions with the M25 and the A3044 .
Due to: Congestion.
Normal traffic conditions are expected between 03:45 and 04:00 on 18 May 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 14.68 miles from Amersham Common.
Location: southbound between junctions J10 (Luton Airport) and J9 (Dunstable A5) .
Due to: Congestion.
Normal traffic conditions are expected between 00:30 and 00:45 on 18 May 2026.
Cause : Roadworks.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 15.57 miles from Amersham Common.
Location: northbound between junctions J1 (Slough) and J1A (Watford) .
Lane Closures : Lanes 2 and 3 are closed.
Due to: Emergency barrier repairs.
Period : expect disruption until 06:00 on 18 May 2026.
Lanes Closed : There are two of three lanes closed.
Nearest town: 8.45 miles from Amersham Common.
Location: northbound at junction J1 (Slough) .
Lane Closures : Lane two is closed.
Due to: Emergency barrier repairs.
Period : expect disruption until 06:00 on 18 May 2026.
Lanes Closed : There is one of two lanes closed.
Nearest town: 8.61 miles from Amersham Common.
Location: northbound between junctions J2 (Beaconsfield) and J4 (High Wycombe) .
Lane Closures : The hard shoulder is closed.
Due to: Horticultural works.
Period : expect disruption until 19:00 on 20 May 2026.
Nearest town: 4.84 miles from Amersham Common.
Location: southbound between junctions J1A (Watford) and J1 (Slough) .
Lane Closures : Lane three is closed.
Due to: Emergency barrier repairs.
Period : expect disruption until 06:00 on 18 May 2026.
Lanes Closed : There is one of three lanes closed.
Nearest town: 7.73 miles from Amersham Common.
Location: anticlockwise at junction J16 (M40) .
Lane Closures : Lane one is closed.
Due to: Emergency barrier repairs.
Period : expect disruption until 06:00 on 18 May 2026.
Lanes Closed : There is one of three lanes closed.
Nearest town: 7.71 miles from Amersham Common.
Location: northbound at junction J1A (Watford) .
Lane Closures : Lane one is closed.
Due to: Emergency barrier repairs.
Period : expect disruption until 06:00 on 18 May 2026.
Lanes Closed : There is one of three lanes closed.
Nearest town: 7.84 miles from Amersham Common.
Location: northbound entry slip at junction J1A (Watford) .
Lane Closures : Lane one is closed.
Due to: Emergency barrier repairs.
Period : expect disruption until 06:00 on 18 May 2026.
Lanes Closed : There is one of two lanes closed.
Nearest town: 8.02 miles from Amersham Common.
Location: northbound between junctions J1 (Slough) and J1A (Watford) .
Lane Closures : Lanes 2 and 3 are closed.
Due to: Emergency barrier repairs.
Period : expect disruption until 06:00 on 18 May 2026.
Lanes Closed : There are two of three lanes closed.
Nearest town: 8.45 miles from Amersham Common.
Location: northbound at junction J1 (Slough) .
Lane Closures : Lane two is closed.
Due to: Emergency barrier repairs.
Period : expect disruption until 06:00 on 18 May 2026.
Lanes Closed : There is one of two lanes closed.
Nearest town: 8.61 miles from Amersham Common.
Location: anticlockwise between junctions J20 (Hemel Hstead) and J18 (Rickmansworth) .
Lane Closures : The hard shoulder, lanes 1 and 2 are closed.
Due to: Emergency barrier repairs.
Period : expect disruption until 05:30 on 18 May 2026.
Lanes Closed : There are two of four lanes closed.
Nearest town: 5.48 miles from Amersham Common.
Location: clockwise exit slip at junction J19 (Watford) .
Lane Closures : Lane one will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 18 May 2026 to 05:30 on 19 May 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 6.71 miles from Amersham Common.
Location: clockwise exit slip at junction J19 (Watford) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 18 May 2026 to 05:30 on 19 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 6.75 miles from Amersham Common.
Location: clockwise between junctions J18 (Rickmansworth) and J19 (Watford) .
Lane Closures : Lane one will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 18 May 2026 to 05:30 on 19 May 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 5.86 miles from Amersham Common.
Location: southbound between junctions J4 and J4A .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 18 May 2026 to 05:30 on 19 May 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 13.53 miles from Amersham Common.
Location: northbound between junctions J4A and J4 .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 18 May 2026 to 05:30 on 19 May 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 14.26 miles from Amersham Common.
Location: anticlockwise exit slip at junction J15 (Slough) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 18 May 2026 to 05:30 on 19 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 12.38 miles from Amersham Common.
Location: westbound entry slip at junction J4B (Heathrow) from the M25 anti-clockwise.
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 18 May 2026 to 05:30 on 19 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 12.53 miles from Amersham Common.
Location: westbound exit slip at junction J4 for Heathrow.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 18 May 2026 to 05:30 on 19 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 13.54 miles from Amersham Common.
Location: eastbound entry slip at junction J4B (Heathrow) from the M25 anti-clockwise.
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 18 May 2026 to 05:30 on 19 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 12.53 miles from Amersham Common.
Location: westbound at junction J6 (Slough) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 18 May 2026 to 06:00 on 19 May 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 11.16 miles from Amersham Common.
Location: westbound between junctions J5 (Colnbrook) and J6 (Slough) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 18 May 2026 to 06:00 on 19 May 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 11.78 miles from Amersham Common.
Location: westbound between junctions J6 (Slough) and J7 (Slough) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 18 May 2026 to 06:00 on 19 May 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 10.94 miles from Amersham Common.
Location: westbound exit slip at junction J6 (Slough) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 18 May 2026 to 06:00 on 19 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 11.16 miles from Amersham Common.
Location: northbound exit slip at junction J4 (High Wycombe) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:15 on 21 May 2026 to 06:00 on 22 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 7.27 miles from Amersham Common.
Location: northbound between junctions J3 (Loudwater) and J4 (High Wycombe) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:15 on 21 May 2026 to 06:00 on 22 May 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 5.31 miles from Amersham Common.
Location: northbound at junction J4 (High Wycombe) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:15 on 21 May 2026 to 06:00 on 22 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 7.27 miles from Amersham Common.
Location: northbound between junctions J3 (Loudwater) and J4 (High Wycombe) .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:15 on 21 May 2026 to 06:00 on 22 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 5.32 miles from Amersham Common.
Location: northbound between junctions J2 (Beaconsfield) and J4 (High Wycombe) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:15 on 21 May 2026 to 06:00 on 22 May 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 4.93 miles from Amersham Common.
Location: anticlockwise between junctions J17 (Maple Cross) and J16 (M40) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Emergency roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 20 May 2026 to 05:00 on 21 May 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 6.25 miles from Amersham Common.
Location: southbound between junctions J2 (Beaconsfield) and J1A (Watford) .
Lane Closures : Lanes 1, 2, 3 and 4 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 23:00 on 21 May 2026 to 05:00 on 22 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 4.73 miles from Amersham Common.
Location: southbound entry slip at junction J2 (Beaconsfield) .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 23:00 on 21 May 2026 to 05:00 on 22 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 4.78 miles from Amersham Common.
Location: southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 23:00 on 21 May 2026 to 05:00 on 22 May 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 5.24 miles from Amersham Common.
Location: northbound between junctions J1 (Slough) and J1A (Watford) .
Lane Closures : Lane three will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:15 on 21 May 2026 to 06:00 on 22 May 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 8.35 miles from Amersham Common.
Location: southbound between junctions J1A (Watford) and J1 (Slough) .
Lane Closures : Lane three will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:15 on 21 May 2026 to 06:00 on 22 May 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 8.18 miles from Amersham Common.
Location: westbound exit slip to the A412 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 21 May 2026 to 05:30 on 22 May 2026.
Schedule : From 22:00 on 26 May 2026 to 05:30 on 27 May 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 8.82 miles from Amersham Common.
Location: clockwise between junctions J16 (M40) and J17 (Maple Cross) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 21 May 2026 to 05:30 on 22 May 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 5.23 miles from Amersham Common.
Location: northbound entry slip at junction J2 (Beaconsfield) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:15 on 20 May 2026 to 06:00 on 21 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 4.87 miles from Amersham Common.
Location: northbound between junctions J10 (Luton Airport) and J11 (Luton) .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 May 2026 to 05:00 on 21 May 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 15.71 miles from Amersham Common.
Location: northbound entry slip at junction J10 (Luton Airport) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 May 2026 to 05:00 on 21 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.43 miles from Amersham Common.
Location: anticlockwise between junctions J18 (Rickmansworth) and J16 (M40) .
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 20 May 2026 to 22 May 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 5.01 miles from Amersham Common.
Location: southbound between junctions J4 and J4A .
Lane Closures : Lane three will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 20 May 2026 to 05:30 on 21 May 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 13.53 miles from Amersham Common.
Location: southbound between junctions J5 (High Wycombe) and J4 (High Wycombe) .
Lane Closures : Lane three will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 20 May 2026 to 06:00 on 21 May 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 8.68 miles from Amersham Common.
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 : From 21:00 on 20 May 2026 to 06:00 on 21 May 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 6.38 miles from Amersham Common.
Location: northbound between junctions J1A (Watford) and J2 (Beaconsfield) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 20 May 2026 to 22 May 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 6.85 miles from Amersham Common.
Location: westbound between junctions J8 (High Wycombe) and J10 (Reading) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 20 May 2026 to 06:00 on 21 May 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 13.4 miles from Amersham Common.
Location: southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:15 on 19 May 2026 to 06:00 on 20 May 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 4.72 miles from Amersham Common.
Location: northbound between junctions J10 (Luton Airport) and J11 (Luton) .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 19 May 2026 to 05:00 on 20 May 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 15.71 miles from Amersham Common.
Location: southbound between junctions J4 and J4A .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 19 May 2026 to 05:30 on 20 May 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 13.53 miles from Amersham Common.
Location: northbound.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:15 and 06:00 from 18 May 2026 to 20 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 7.57 miles from Amersham Common.
Location: westbound exit slip to the A412 .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 18 May 2026 to 21 May 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 8.82 miles from Amersham Common.
Location: anticlockwise at junction J20 (Hemel Hstead) .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 18 May 2026 to 22 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 7.7 miles from Amersham Common.
Location: anticlockwise at junction J20 (Hemel Hstead) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 18 May 2026 to 22 May 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 7.86 miles from Amersham Common.
Location: anticlockwise between junctions J21 (M1) and J20 (Hemel Hstead) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 18 May 2026 to 22 May 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 8.66 miles from Amersham Common.
Location: eastbound between junctions J4 and J3 (Heathrow) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Emergency roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 18 May 2026 to 20 May 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 14.03 miles from Amersham Common.
Location: northbound between junctions J1A (Watford) and J2 (Beaconsfield) .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 18 May 2026 to 20 May 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 6.85 miles from Amersham Common.
Location: clockwise at junction J16 (M40) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 18 May 2026 to 21 May 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 8.32 miles from Amersham Common.
Location: northbound exit slip at junction J1A (Watford) .
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 18 May 2026 to 21 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 8.18 miles from Amersham Common.
Location: clockwise between junctions J15 (Slough) and J16 (M40) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 18 May 2026 to 21 May 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 9.03 miles from Amersham Common.
Location: clockwise entry slip at junction J16 (M40) .
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 18 May 2026 to 21 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 8.21 miles from Amersham Common.
Location: anticlockwise between junctions J17 (Maple Cross) and J16 (M40) .
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 18 May 2026 to 20 May 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 4.69 miles from Amersham Common.
Location: anticlockwise entry slip at junction J16 (M40) From M40 North.
Lane Closures : Lane one will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 18 May 2026 to 21 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 8.21 miles from Amersham Common.
Location: clockwise between junctions J16 (M40) and J17 (Maple Cross) .
Lane Closures : Lane one will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 18 May 2026 to 21 May 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 7.65 miles from Amersham Common.
Location: The A308M eastbound between the junctions with the M4 and the A308 .
Lane Closures : Lane one will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:30 and 06:00 from 18 May 2026 to 22 May 2026.
Schedule : Expect disruption everyday between 20:30 and 06:00 from 26 May 2026 to 30 May 2026.
Schedule : Expect disruption everyday between 20:30 and 06:00 from 1 June 2026 to 6 June 2026.
Schedule : Expect disruption everyday between 20:30 and 06:00 from 8 June 2026 to 13 June 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 12.26 miles from Amersham Common.
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