Delays at London Paddington train station have now been cleared, following two days of disruption.
Services to Heathrow Airport were suspended and other services were cancelled on Thursday after two fires caused signalling problems.
Trains are now running normally to and from the station.
– National Rail Enquiries
"A person has been hit by a train in the Wembley Central area.
"Because of this, trains between London Euston / Clapham Junction and Watford Junction may be delayed by up to 30 minutes. There is no current estimate for when a normal service will resume."