Overview

• Emergency services are responding after incidents between Luton and St Albans City and between Haywards Heath/Horsham and Gatwick, with all lines at those locations closed.
• Thameslink says services are cancelled until further notice, while Southern and Gatwick Express are severely disrupted and National Rail reports widespread delays and cancellations.
• Services in and out of London St Pancras, including East Midlands Railway and Thameslink routes, are delayed, revised or cancelled with knock‑on effects across the network.
• Thameslink has told passengers on halted trains to remain on board and wait for staff instructions as investigations and recovery work continue.
• Gatwick Airport station was evacuated due to overcrowding and operators are arranging ticket acceptance and alternatives, with journeys likely to take significantly longer than usual.