Delays of up to 45 minutes on First Great Western between London Paddington and Reading, and between London Paddington and Greenford due to safety checks of the line being made at West Drayton.
London Underground are accepting tickets for reasonable routes. There is currently no estimate for when a normal service will resume. Some Heathrow Express and Heathrow Connect services may be delayed due to congestion in the area.
More top news
That Was The Month That Was...
The family of a mother and son killed in a crash on the Sheppey Crossing say the road is dangerous - and warned that more people will die.
If you spotted a rather threatening looking tornado looming over your head today don't be alarmed.