London travel news LIVE: Signalling fault causing delays on Bakerloo, Lioness and Overground trains

There is no Lioness line service between Euston and Kilburn High Road while a signal problem is being fixed between Queen’s Park and South Hampstead.

There is good service on the rest of the line.

There are severe delays between Queen’s Park and Harrow and Wealdstone while Network Rail fix a signal failure at Kilburn High Road.

There are minor delays on the rest of the line.

London Underground tickets will be accepted on London Buses and Thameslink.

Due to an earlier signalling problem between Malden Manor and Chessington South, delays to services between London Waterloo and Chessington South are expected until 9.00.

Lines are reopened, but as service returns to normal trains may be delayed up to 40 minutes.

London Overground trains are unable to run between Kilburn High Road and London Euston due to a signalling fault between Queens Park and South Hampstead.

Trains will be revised to start and finish at Kilburn High Road.

Routes between Watford Junction and London Euston will be affected until around 9.00.

Tickets will be accepted on London Buses via any reasonable route at no extra cost.

Avanti West Coast, London Northwestern Railway and Southern services are not currently affected by this disruption.

There is congestion on the M25 clockwise exit slip at junction 17 causing delays of up to 10 minutes against expected traffic.

Normal conditions are expected by 7.15.

An eight-year-old girl has sustained potentially serious injuries in a car crash on the M40.

Four other passengers in the car – a four year-old-boy and three adults including two men and a woman sustained minor injuries.

All five passengers have been taken to the John Radcliffe Hospital in Oxford for further assessment and treatment, with the air ambulance team travelling in the ambulance with the young girl.

The South Central Ambulance Service received multiple 999 calls at around 12.35 with reports that a car had left the M40 between junctions 10 and 11 northbound, rolled over and ended up in a ditch.

Emergency services attended the scene including a rapid response vehicle, four ambulances, the Thames Valley Air Ambulance critical care car.

Police, fire and rescue and highways agency services also responded to the scene.

One lane remains closed on the M40 following a crash which caused a car to flip over onto its roof.

Delays are expected while emergency services continue to attend to the scene.

A collision causing a car to flip and leave the carriageway has created severe traffic delays of up to 40 minutes on the M40 northbound between J10 and J11.

National Highways east said traffic has stopped while emergency services attend the scene and long delays are building on the approach.

A signal failure between Heathrow Terminals 2 & 3 and 5 is causing minor delays on the Piccadilly line between these stations.

There is good service on the rest of the line.

Expected delays on the M25 clockwise between junctions J5 and J6 have reduced from 50 to 15 minutes.

Delays were caused by an earlier accident.

Normal traffic conditions are expected by 9.45.