On Wednesday 23 December, Northwood Underground Station was closed due to an unknown serious incident.
Witness reports suggest a person has been stuck by a train. The British transport police have yet to confirm this.
One witness to the incident said "I hope the person involved recovers, the station is currently closed and I am not sure how to get home at the moment, but I'm not complaining as there is a person injured and they should be priority."
Members of the public are urged to avoid the station and should seek alternative travel arrangements where necessary.
A large number of emergency vehicles can be seen in the area.
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