Trespassers in the tunnel at Clifton Down, have resulted in all lines being blocked between Bristol Temple Meads and Avonmouth.
Trains may be delayed by up to 30 minutes or be cancelled. Disruption is expected until 15:30.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner
Twitter:
If you would like to follow this incident on Twitter, please use #CliftonDown
Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.
Feedback:
We want to make information better – tell us how! Fill out this online Disruption Survey.