Engineering work is taking place between South Croydon and Coulsdon South, closing various lines on Sunday.
As a result, trains that usually run between London Bridge and Horsham will not run. Services that usually run between Bedford and Three Bridges will be amended to run between Bedford and Horsham.
Check before you travel:
These changes are not currently shown in the National Rail Enquiries Journey Planner, please check back nearer to the time of travel.