Overturned Vehicle Location : The M40 southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Reason : Accident involving an overturned vehicle.
Status : Currently Active.
Time To Clear : The event is expected to clear between 11:45 and 12:00 on 20/03/2026.
Return To Normal : Normal traffic conditions are expected between 12:15 and 12:30 on 20/03/2026.
Lanes Closed : All lanes are closed. 
Overturned Vehicle Location : The M40 southbound entry slip at junction J4 (High Wycombe) .
Reason : Accident involving an overturned vehicle.
Status : Currently Active.
Time To Clear : The event is expected to clear between 12:00 and 12:15 on 20/03/2026.
Return To Normal : Normal traffic conditions are expected between 12:00 and 12:15 on 20/03/2026.
Lanes Closed : All lanes are closed. 
Overturned Vehicle Location : The M40 southbound entry slip at junction J3 (Loudwater) .
Reason : Accident involving an overturned vehicle.
Status : Currently Active.
Time To Clear : The event is expected to clear between 12:00 and 12:15 on 20/03/2026.
Return To Normal : Normal traffic conditions are expected between 12:00 and 12:15 on 20/03/2026.
Lanes Closed : All lanes are closed. 
Broken down vehicle Location : The M40 southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Reason : Broken down vehicle.
Status : Cleared. 
Swakeleys Roundabout - There i Swakeleys Roundabout - There is a broken down car on the eastbound on slip road to the A40. All lanes are open.
Kymberley Road (One Way System Kymberley Road (One Way System) between Headstone Road and College Road - Road closure to facilitate resurfacing works 
Congestion Location : The M40 southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 10:15 and 10:30 on 20/03/2026.
Delay : There are currently delays of 20 minutes against expected traffic. 
Congestion Location : The A414 westbound between the junctions with the A405 and the M1 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 10:30 and 10:45 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. 
Congestion Location : The M1 southbound between junctions J10 (Luton Airport) and J8 (Hemel Hstead) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 11:45 and 12:00 on 20/03/2026.
Delay : There are currently delays of 15 minutes against expected traffic. 
Congestion Location : The junction of the A414 and the A1M .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 11:45 and 12:00 on 20/03/2026. 
Congestion Location : The M1 northbound at junction J8 (Hemel Hstead) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 12:45 and 13:00 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. 
Road Works Location : The A1M southbound between junctions J8 and J7 .
Lane Closures : The hard shoulder is closed.
Reason : Bridge repairs.
Status : Currently Active.
Period : expect disruption until 21:00 on 8/10/2026. 
Road Works Location : The A1M northbound between junctions J7 and J8 .
Lane Closures : The hard shoulder is closed.
Reason : Bridge repairs.
Status : Currently Active.
Period : expect disruption until 21:00 on 8/10/2026. 
Road Works Location : The A5 northbound between the junctions with the A422 and the A508 .
Lane Closures : Lane two will be closed.
Reason : Horticultural works are planned.
Status : Pending.
Schedule : From 20:00 on 20/03/2026 to 06:00 on 21/03/2026.
Lanes Closed : There will be one of two lanes closed. 
Road Works Location : The A1M southbound between junctions J9 and J8 .
Reason : Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 20/03/2026 to 05:00 on 21/03/2026. 
Road Works Location : The A1M northbound between junctions J6 and J7 .
Reason : Roadworks scheme.
Status : Currently Active.
Period : from 21:03 on 13/03/2026 to 05:00 on 21/03/2026. 
Road Works Location : The M40 southbound between junctions J2 (Beaconsfield) and J1A (Watford) .
Lane Closures : Lanes 1 and 2 will be closed.
Reason : Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 20/03/2026 to 06:00 on 21/03/2026.
Lanes Closed : There will be two of four lanes closed. 
Road Works Location : The M1 northbound at junction J11A .
Lane Closures : Lane one will be closed.
Reason : Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20/03/2026 to 05:00 on 21/03/2026.
Lanes Closed : There will be one of four lanes closed. 
Road Works Location : The M1 northbound between junctions J11 (Luton) and J11A .
Lane Closures : Lane one will be closed.
Reason : Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20/03/2026 to 05:00 on 21/03/2026.
Lanes Closed : There will be one of three lanes closed. 
Road Works Location : The M40 northbound between junctions J4 (High Wycombe) and J5 (High Wycombe) .
Lane Closures : Lanes 1 and 2 will be closed.
Reason : Horticultural works are planned.
Status : Pending.
Schedule : From 22:15 on 20/03/2026 to 06:00 on 21/03/2026.
Lanes Closed : There will be two of three lanes closed. 
Road Works Location : The A1M northbound between junctions J3 and J4 .
Lane Closures : Lane three will be closed.
Reason : Road marking works are planned.
Status : Pending.
Schedule : From 23:00 on 20/03/2026 to 05:30 on 21/03/2026.
Lanes Closed : There will be one of three lanes closed. 
Road Works Location : The A1M northbound exit slip at junction J6 .
Reason : Road marking works are planned.
Status : Pending.
Schedule : From 23:00 on 20/03/2026 to 05:30 on 21/03/2026.
Lanes Closed : All lanes will be closed. 
Road Works Location : The A1M northbound between junctions J5 and J6 .
Reason : Road marking works are planned.
Status : Pending.
Schedule : From 23:00 on 20/03/2026 to 05:30 on 21/03/2026.
Lanes Closed : All lanes will be closed. 
Road Works Location : The A1M northbound at junction J4 .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Reason : Road marking works are planned.
Status : Pending.
Schedule : From 23:00 on 20/03/2026 to 05:30 on 21/03/2026.
Lanes Closed : All lanes will be closed. 
Road Works Location : The M25 anticlockwise between junctions J22 (St Albans) and J21A (Watword) .
Lane Closures : Lanes 1 and 2 will be closed.
Reason : Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 23:00 on 20/03/2026 to 05:30 on 21/03/2026.
Lanes Closed : There will be two of four lanes closed. 
Road Works Location : The A40 westbound between the A437 and the junction with the A412 .
Reason : Roadworks are planned.
Status : Pending.
Schedule : From 23:00 on 20/03/2026 to 05:30 on 21/03/2026.
Lanes Closed : All lanes will be closed. Current Incidents
Overturned VehicleLocation : The M40 southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Reason : Accident involving an overturned vehicle.
Status : Currently Active.
Time To Clear : The event is expected to clear between 11:45 and 12:00 on 20/03/2026.
Return To Normal : Normal traffic conditions are expected between 12:15 and 12:30 on 20/03/2026.
Lanes Closed : All lanes are closed. CLEARED @ 10:57
Location:
M40, 1.88m of High Wycombe, Buckinghamshire
Overturned VehicleLocation : The M40 southbound entry slip at junction J4 (High Wycombe) .
Reason : Accident involving an overturned vehicle.
Status : Currently Active.
Time To Clear : The event is expected to clear between 12:00 and 12:15 on 20/03/2026.
Return To Normal : Normal traffic conditions are expected between 12:00 and 12:15 on 20/03/2026.
Lanes Closed : All lanes are closed. CLEARED @ 10:57
Location:
M40, 1.41m of High Wycombe, Buckinghamshire
Overturned VehicleLocation : The M40 southbound entry slip at junction J3 (Loudwater) .
Reason : Accident involving an overturned vehicle.
Status : Currently Active.
Time To Clear : The event is expected to clear between 12:00 and 12:15 on 20/03/2026.
Return To Normal : Normal traffic conditions are expected between 12:00 and 12:15 on 20/03/2026.
Lanes Closed : All lanes are closed. CLEARED @ 10:57
Location:
M40, 2.58m of Beaconsfield, Buckinghamshire
Broken down vehicleLocation : The M40 southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Reason : Broken down vehicle.
Status : Cleared. CLEARED @ 13:03
Location:
M40, 0.58m of Beaconsfield, Buckinghamshire
CongestionLocation : The A404 northbound at the junction with the M40 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 09:45 and 10:00 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. CLEARED @ 09:54
Location:
A404, 1.57m of High Wycombe, Buckinghamshire
CongestionLocation : The M40 southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 10:15 and 10:30 on 20/03/2026.
Delay : There are currently delays of 20 minutes against expected traffic. CLEARED @ 10:21
Location:
M40, 1.31m of Beaconsfield, Buckinghamshire
CongestionLocation : The A414 westbound between the junctions with the A405 and the M1 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 10:30 and 10:45 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. CLEARED @ 10:30
Location:
A414, 2.17m of Saint Albans, Hertfordshire
CongestionLocation : The M40 southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 13:00 and 13:15 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Earlier Reason : Caused by the earlier broken down vehicle. CLEARED @ 13:03
Location:
M40, 1.31m of Beaconsfield, Buckinghamshire
CongestionLocation : The M40 southbound exit slip at junction J4 (High Wycombe) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 11:00 and 11:15 on 20/03/2026. CLEARED @ 11:15
Location:
M40, 1.5m of High Wycombe, Buckinghamshire
CongestionLocation : The M1 southbound between junctions J10 (Luton Airport) and J8 (Hemel Hstead) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 11:45 and 12:00 on 20/03/2026.
Delay : There are currently delays of 15 minutes against expected traffic. CLEARED @ 11:51
Location:
M1, 4.12m of Luton, Hertfordshire
CongestionLocation : The junction of the A414 and the A1M .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 11:45 and 12:00 on 20/03/2026. CLEARED @ 11:51
Location:
A414, 1.76m of Welwyn Garden City, Hertfordshire
CongestionLocation : The M40 southbound exit slip at junction J4 (High Wycombe) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 12:15 and 12:30 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. CLEARED @ 12:27
Location:
M40, 1.5m of High Wycombe, Buckinghamshire
CongestionLocation : The M1 northbound at junction J8 (Hemel Hstead) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 12:45 and 13:00 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. CLEARED @ 12:54
Location:
M1, 3.6m of Hemel Hempstead, Hertfordshire
CongestionLocation : The M40 southbound exit slip at junction J4 (High Wycombe) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 12:45 and 13:00 on 20/03/2026. CLEARED @ 12:54
Location:
M40, 1.42m of High Wycombe, Buckinghamshire
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