Engineering work is taking place between Loughborough Junction and Tulse Hill, closing some lines.
No Thameslink trains will run between London Blackfriars and Wimbledon / Sutton.
A reduced timetable will run between London St Pancras International and St Albans / Luton.
You can use your tickets on London Underground Northern line services between Kings Cross and Morden, London Trams between Wimbledon and East Croydon, and London Buses between London Blackfriars and Streatham via Tulse Hill, between Streatham and Sutton via Wimbledon, and between Streatham and Sutton via Mitcham.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
You can plan your journey on London Underground / London Trams / London Buses by using the Transport for London Journey Planner