A fault in the radio network used for communication between train drivers and signallers has caused severe disruption to services across southern England, particularly affecting London Waterloo, one of the UK's busiest railway stations.
The problem was reported towards the end of the morning rush hour on the Wessex route, which connects London with the south and south-west. Although the fault was fixed by 11am, disruption is expected to continue until the end of the day, with some services cancelled or delayed by up to 90 minutes.
South Western Railway (SWR) has been the most affected operator, with major disruption across its entire network, including routes as far west as Exeter. Other affected operators include Southern, CrossCountry, Gatwick Express, Great Western Railway, London Overground, and Thameslink.
Passengers have been advised to allow extra time for journeys and check before travelling. They can use their tickets on alternative routes or operators at no additional cost. A Network Rail spokesperson apologised for the disruption, stating that services are now returning to normal.
