A cable fire has led to chaos for commuters after Chiltern Railways announced they will need to cancel or limit services for the remainder of the day.
Trains across west London have been severely affected by the fire, which happened between Neasden and West Hampstead on Tuesday (October 4).
Chiltern Railways said: "A cable fire between Wembley Stadium and London Marylebone has damaged signalling in the area.
"Services are not expected to return to normal today."
London Fire Brigade who attended the scene told getwestlondon: "Approximately 5 metres of signalling cables and adjacent sleepers were 100% damaged in a fire."
The spark has had a knock-on effect for those trying to get into London from, both Buckinghamshire and outer boroughs.
Commuter Patricia Davidson said: "No Chiltern Railways trains into Marylebone this morning. It's a bun fight to get in. Take the tube. You have been warned."
Passenger Andrew Gee added: "Trying to get to London on Chiltern Railway? Don't bother. Trains stopping at Ruislip. Waited for one hour for train to arrive."
How can I get to my destination?
Network Rail engineers are on site assessing the damage and putting together a repair plan, but have warned those travelling around the Marylebone, Wembley , Paddington and West Ruislip areas in west London to check their routes before travelling.
Trains into Marylebone will be terminating at West Ruislip and passengers will be asked to take the tube or buses from there.
For services to London from Aylesbury to Amersham, services will run to Harrow on the Hill, where passengers are asked to get the tube.
Ticket acceptance is in place for Virgin Trains, London Midland, Great Western Railway and Cross Country ticket holders.