Multiple Tube lines are facing disruption on Thursday evening.
Currently the Central, Piccadilly and Metropolitan lines are delayed.
It comes as drivers are still facing major congestion on the M23 northbound after a multi-vehicle crash near Gatwick Airport.
Six people were rushed to hospital after a lorry, minibus and a car collided at around 11.45am.
Although two lanes re-opened in the afternoon, there are still long delays with lanes one and two shut while recovery agents continue to work.
