First Great Western has just issued this statement:
"Network Rail has advised us that it is unsafe to operate services through Chipping Sodbury and the Severn Tunnel due to flooding. Presently all lines between Bristol Temple Meads and Weston Super Mare - leading to Taunton and Bristol Parkway to Gloucester are blocked. Services from Bristol Parkway into South Wales are also subject to cancellation or delay.The Severn Tunnel has now reopened - and services between Bristol Parkway and Newport are returning to normal, but some services may still be cancelled or delayed by up to 120 minutes. "
More top news
The man who carried out the Westminster attack is thought to be British born and was once investigated by MI5, the Prime Minister has said.
More than 50 primary school children from Somerset, who were caught up in the terror attack in Westminster, have returned home safely.
Police forces across the region have been paying tribute to an officer killed during the terror attack in Westminster.