There's disruption on First Great Western trains between London Paddington and Bristol Temple Meads due to a trespass incident at Swindon.
It's affecting all services through Swindon. Trains may be delayed or cancelled due to congestion through the area.
Journey times may be extended by up to 45 minutes until at least 5pm.
More top news
A Royal Navy sailor from Gloucestershire is one of four men who's been accused of raping a woman in Canada after an ice hockey tournament.
We've been in awe with all the pictures you've been sending us. Here's as many as we can fit!
An exclusive ITV opinion poll shows the Lib Dems are facing electoral wipeout in the South West.