There are delays of up to 15 minutes on First Great Western services between Cam & Dursley and Gloucester after a bus hit a level crossing barrier.
Trains are having to run through the area at reduced speed. It is not known when normal service will resume.
A rail union will protest across the region today in a campaign against the removal of buffet cars on First Great Western trains.
The RMT says losing the buffet cars will lead to job losses and an 'upstairs downstairs' service on West Country trains. Events will be taking place at Bath Spa and Bristol Temple Meads from 7 o clock this morning.
Rail passengers are being warned that there are delays of up to 40 minutes on First Great Western trains between Westbury and Trowbridge. It's due to a signalling problem.
There are delays of up to 30 minutes on First Great Western to and from London Paddington due to a signalling problem at Acton Main Line.
Tickets being accepted on Chiltern, CrossCountry, South West Trains and Underground services.
Also affecting Heathrow Connect and Heathrow Express.
First Great Western expects the disruption to continue until at least 09:00.
There are delays of up to 30 minutes on First Great Western services between Westbury and Salisbury due to a signalling problem between Warminster and Salisbury.
First Great Western expects disruption to continue until at least 9am.
Bristol Parkway Station now has 700 more parking spaces.
The Transport Minister Baroness Kramer officially opened the new car park this morning. It cost £13 million to build.
First Great Western expects Bristol Parkway to become much busier once the Great Western mainline is electrified.
Baroness Kramer says the investment will pay off in the future.
There are delays of up to 20 minutes on First Great Western and South West services between Bristol Temple Meads and Bath Spa after a person was hit by train at Keynsham earlier.
The line has now reopened but knock-on delays are likely until 12:30pm
First Great Western have started to rip out seats from first class carriages to try and tackle problems of overcrowding on services between Bristol and London.
The busy commuter line suffers badly with overcrowding. The company are now converting the carriages to standard class.
Labour MP Kerry McCarthy, who represents Bristol East, has been putting pressure on First Great Western to rectify the problem. She's released the statement below.
Work has started to rip out thousands of first class seats on the region's busiest trains in a radical move to ease overcrowding.
The carriages on Great Western trains will be converted for use by standard class passengers. The thirteen million pound scheme will see around 3,000 extra places for standard class passengers to sit.
The work has just started and will be complete next summer with more than 50 trains being converted.
A survey of rail companies has found less than half of people travelling in the West Country are satisfied with the service they get.
The findings by Which? put South West Trains and First Great Western almost bottom of the list of train companies in the entire country.
55% of commuters said they were dissatisfied with the service they received.
Alex Neill is Head of Campaigns at Which?...