Major rail disruption expected in southern England until end of day

A radio communications fault caused major disruption to rail services across southern England on Thursday morning, with multiple operators reporting cancellations and delays [1]. National Rail reported the issue, which affected communications between trains and signallers, before 09:00 BST [1]. The fault was resolved by approximately 10:30 BST, with a Network Rail spokesperson stating staff had worked to resolve it and train services were returning to normal [1]. Southern Rail said services to and from London Victoria were particularly affected, along with its West Coastway route [1]. Gatwick Express also warned of delays for its services running to and from London Victoria [1]. South Western Railway reported services across its entire network could be cancelled, delayed by up to 90 minutes, or revised [1]. Thameslink warned of likely delays on services to and from Brighton, Horsham, and Three Bridges [1]. Southeastern rail services were not affected [1]. Passengers were advised to listen to announcements and check station screens for the latest information, with Gatwick Express noting tickets could be used on alternative routes at no extra cost [1].