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. 
Accident Location : The M4 westbound between junctions J5 (Colnbrook) and J6 (Slough) .
Reason : Road traffic collision.
Status : Cleared. 
Broken down vehicle Location : The M40 southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Lane Closures : Lanes 3 and 4 are closed.
Reason : Broken down vehicle.
Status : Currently Active.
Time To Clear : The event is expected to clear between 12:45 and 13:00 on 20/03/2026.
Return To Normal : Normal traffic conditions are expected between 12:45 and 13:00 on 20/03/2026.
Delay : There are currently delays of 30 minutes against expected traffic.
Lanes Closed : There are two of four lanes closed.
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.
Congestion Location : The A405 northbound at the junction with the M1 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 08:45 and 09:00 on 20/03/2026. 
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 A34 northbound between the A415 and the junction with the A423 north of Kennington.
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 11:15 and 11:30 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. 
Congestion Location : The A34 northbound entry slip from the A423 north of Kennington.
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 11:15 and 11:30 on 20/03/2026. 
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 A34 northbound between the junctions with the A44 and the M40 .
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.
Road Works Location : The A34 northbound between the A4183 south of Kennington and the junction with the A420 .
Reason : Roadworks scheme.
Status : Currently Active.
Period : from 21:00 on 9/03/2026 to 06:00 on 26/03/2026.
Road Works Location : The M4 eastbound entry slip at junction J6 (Slough) .
Reason : Roadworks scheme.
Status : Currently Active.
Period : from 20:43 on 17/03/2026 to 06:00 on 22/03/2026.
Road Works Location : The M4 eastbound at junction J6 (Slough) .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Reason : Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 20/03/2026 to 06:00 on 21/03/2026.
Lanes Closed : All lanes will be closed.
Road Works Location : The M4 eastbound between junctions J7 (Slough) and J6 (Slough) .
Lane Closures : Lanes 1, 2 and 3 are closed.
Reason : Roadworks.
Status : Currently Active.
Period : expect disruption until 06:00 on 21/03/2026.
Lanes Closed : There are three of four lanes closed.
Road Works Location : The M40 southbound between junctions J9 (Bicester) and J8A (Thame) .
Lane Closures : Lane one will be closed.
Reason : Roadside drains 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 three lanes closed.
Road Works Location : The M4 westbound exit slip at junction J10 (Reading) .
Lane Closures : Lanes 1 and 2 will be closed.
Reason : Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 20/03/2026 to 06:00 on 21/03/2026.
Lanes Closed : All lanes will be closed.
Road Works Location : The M4 westbound between junctions J8 (High Wycombe) and J10 (Reading) .
Lane Closures : Lanes 1 and 2 will be closed.
Reason : Horticultural works 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 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 A404M southbound exit slip at junction J9A .
Reason : Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 20/03/2026 to 06:00 on 21/03/2026.
Lanes Closed : All lanes will be 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 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.
Road Works Location : The M40 northbound at junction J1 (Slough) .
Lane Closures : Lanes 1 and 2 will be closed.
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.
Road Works Location : The M1 southbound between junctions J8 (Hemel Hstead) and J6 (Watford A405) .
Lane Closures : The hard shoulder is closed.
Reason : Roadside Equipment Maintenance.
Status : Currently Active.
Period : expect disruption until 15:30 on 20/03/2026.Current Incidents
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.
Location:
M40, 1.5m of High Wycombe, Buckinghamshire
CongestionLocation : The A34 northbound between the junctions with the A44 and the M40 .
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.
Location:
A34, 4.37m of Oxford, Oxfordshire
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 12:30 and 12:45 on 20/03/2026.
Cause : Broken down vehicle.
Delay : There are currently delays of 30 minutes against expected traffic.
Location:
M40, 1.31m of Beaconsfield, Buckinghamshire
Broken down vehicleLocation : The M40 southbound between junctions J4 (High Wycombe) and J2 (Beaconsfield) .
Lane Closures : Lanes 3 and 4 are closed.
Reason : Broken down vehicle.
Status : Currently Active.
Time To Clear : The event is expected to clear between 12:45 and 13:00 on 20/03/2026.
Return To Normal : Normal traffic conditions are expected between 12:45 and 13:00 on 20/03/2026.
Delay : There are currently delays of 30 minutes against expected traffic.
Lanes Closed : There are two of four lanes closed.
Location:
M40, 0.58m of Beaconsfield, Buckinghamshire
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
CongestionLocation : The A405 northbound at the junction with the M1 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 08:45 and 09:00 on 20/03/2026. CLEARED @ 08:51
Location:
A405, 2.76m of Watford, Hertfordshire
CongestionLocation : The A404 northbound at the junction with the M40 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 09:30 and 09:45 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. CLEARED @ 09:36
Location:
A404, 1.57m of High Wycombe, 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 A34 northbound between the A415 and the junction with the A423 north of Kennington.
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 11:15 and 11:30 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. CLEARED @ 11:15
Location:
A34, 1.32m of Oxford, Oxfordshire
CongestionLocation : The A34 northbound entry slip from the A423 north of Kennington.
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 11:15 and 11:30 on 20/03/2026. CLEARED @ 11:24
Location:
A34, 1.54m of Oxford, Oxfordshire
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
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