Engineering work is taking place between Purley and Balcombe all day, closing some lines.
Services between London and Brighton will be subject to extended journey times of around 10 minutes.
Trains between Cambridge and Gatwick Airport will be extended to run to / from Three Bridges.
A reduced service will run between Bedford and Gatwick Airport.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
Replacement Bus Travel Advice:
You can find the location of your bus replacement by checking station signs or by searching for your station on our station information pages.
Bicycles are not allowed on rail replacement bus services at any time, unless fully folded. More travel advice for your replacement bus journey is available by selecting the Train Operating Company you are travelling with here.