Rail firm issues ‘do not travel’ alert after ‘multiple incidents’ across south-east England

Signalling issue and train derailment in south London hits Southern, Thameslink and Gatwick Express services

A do not travel" alert has been issued by the UK's largest railway franchise, after a train derailment and signalling issues affected services across south-east England.

Train operators Southern, Thameslink and Gatwick Express - all part of the Govia Thameslink Railway (GTR) franchise in south-east England - urged passengers not to travel on Wednesday morning if at all possible" because of multiple incidents".