Engineering work is taking place in the London Bridge area, closing various lines.
Thameslink services which usually run between Kentish Town and Rainham / Gillingham will only run between Plumstead and Rainham. Your tickets will be accepted on Southeastern services between Plumstead and London Bridge, and Elizabeth line services between Abbey Wood and Farringdon.
Thameslink services between Brighton and Cambridge / Bedford will run to an amended timetable and divert via Selhurst.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner