Train passengers heading to London Paddington are suffering delays of up to 20 minutes.
A signalling problem near Ealing Broadway is the causing delays of up to 20 minutes on First Great Western services to and from London Paddington.
There is no firm estimate yet of how long disruption will last but it is likely to continue until at least 2pm, Network Rail said.
Our top stories
- Do you want alerts delivered straight to your phone via our WhatsApp service? Text NEWS or SPORT or NEWS AND SPORT, depending on which services you want, and your full name to 07767 417704. Save our number into your phone’s contacts as Oxford Mail WhatsApp and ensure you have WhatsApp installed.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here