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. 
Western Avenue (Eastbound) nea Western Avenue (Eastbound) near the junction with Alperton Lane - Collision - Lane one reopened. Traffic is flowing well for the time of day.
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.
Lampton Road (Both Directions) Lampton Road (Both Directions) at the junction of Alexandra Road - Temporary signals in operation to facilitate resurfacing works. 
All lanes reopened. All lanes reopened. Traffic is moving well.
The Parkway (Northbound) at th The Parkway (Northbound) at the junction of North Hyde Road - Road is now fully open. Traffic is moving well.
Heston Road (All Directions) a Heston Road (All Directions) at the junction of Wheatlands - Temporary signals in operation to facilitate resurfacing works. Expect some delays while the restrictions are in place.
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 M25 anticlockwise entry slip at junction J19 (Watford) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 07:15 and 07:30 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. 
Congestion Location : The M4 westbound between junctions J5 (Colnbrook) and J6 (Slough) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 08:45 and 09:00 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Earlier Reason : Caused by an earlier accident. 
Congestion Location : The A308M westbound between the junctions with the A308 and the M4 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 07:30 and 07:45 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. 
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 A30 eastbound at the junction with the A308 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 10:45 and 11:00 on 20/03/2026. 
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 M25 clockwise exit slip at junction J13 (A30) .
Reason : Road repairs are planned.
Status : Pending.
Schedule : From 23:00 on 20/03/2026 to 06:00 on 21/03/2026.
Lanes Closed : All lanes will be closed.
Road Works Location : The M25 clockwise entry slip at junction J13 (A30) .
Reason : Road repairs are planned.
Status : Pending.
Schedule : From 23:00 on 20/03/2026 to 06:00 on 21/03/2026.
Lanes Closed : All lanes will be closed.
Road Works Location : The M25 clockwise between junctions J12 (Basingstoke) and J13 (A30) .
Lane Closures : Lane one will be closed.
Reason : Road repairs are planned.
Status : Pending.
Schedule : From 23:00 on 20/03/2026 to 06:00 on 21/03/2026.
Lanes Closed : There will be one of five lanes closed.
Road Works Location : The M1 southbound between junctions J9 (Dunstable A5) and J8 (Hemel Hstead) .
Lane Closures : The hard shoulder, lanes 1 and 2 are closed.
Reason : Road repairs.
Status : Currently Active.
Period : expect disruption until 05:00 on 21/03/2026.
Lanes Closed : There are two of four lanes closed.
Road Works Location : The M4 eastbound entry slip at junction J12 (Reading) .
Reason : Roadworks scheme.
Status : Currently Active.
Period : from 21:05 on 19/03/2026 to 06:00 on 28/03/2026.
Road Works Location : The M4 eastbound exit slip at junction J12 (Reading) .
Reason : Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 19/03/2026 to 21/03/2026.
Lanes Closed : All lanes will be closed.
Road Works Location : The M4 eastbound between junctions J13 (Newbury) and J12 (Reading) .
Lane Closures : Lanes 1 and 2 are closed.
Reason : Roadworks.
Status : Currently Active.
Period : expect disruption until 06:00 on 21/03/2026.
Lanes Closed : There are two of three lanes closed.
Road Works Location : The M4 eastbound 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 eastbound between junctions J11 (Basingstoke) and J10 (Reading) .
Lane Closures : Lanes 1, 2 and 3 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 three of four lanes closed.Current Incidents
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.
Location:
M40, 2.58m of Beaconsfield, 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.
Location:
M40, 1.41m of High Wycombe, 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.
Location:
M40, 1.88m of High Wycombe, Buckinghamshire
CongestionLocation : The M25 anticlockwise entry slip at junction J19 (Watford) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 07:15 and 07:30 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. CLEARED @ 07:21
Location:
M25, 1.75m of Watford, Hertfordshire
CongestionLocation : The M4 westbound between junctions J5 (Colnbrook) and J6 (Slough) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 08:45 and 09:00 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Earlier Reason : Caused by an earlier accident. CLEARED @ 08:51
Location:
M4, 1.62m of Slough, Slough
CongestionLocation : The A308M westbound between the junctions with the A308 and the M4 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 07:30 and 07:45 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. CLEARED @ 07:30
Location:
A308(M), 0.85m of Bray, Windsor and Maidenhead
CongestionLocation : The M40 northbound exit slip at junction J4 (High Wycombe) .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 08:15 and 08:30 on 20/03/2026.
Delay : There are currently delays of 10 minutes against expected traffic. CLEARED @ 08:15
Location:
M40, 1.46m of High Wycombe, 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
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