The incident was reported between Streatham and Tulse Hill at around 7pm today (March 28).
National Rail confirmed that all lines between these stations have closed and services may be delayed by up to 60 minutes.
⚠️NEW – #TulseHill – Disruption between Streatham and Tulse Hill expected until 20:00.
— National Rail (@nationalrailenq) March 28, 2025
It has affected Thameslink and Southern services with disruption to last until 10pm.
If you’ve been affected by what happened on the network, there is always someone to talk to.
You can contact the Samaritans on 116 123 from any phone for a confidential chat.
We have contacted British Transport Police for further information.
