London commuters will face delays on all services to and from Waterloo this morning, and there are also severe delays on the Jubilee line.
Trains are subject to delays or cancellations due to signalling problems at the station, which means trains are currently unable to access platforms five, six or seven from certain lines.
National Rail said this is causing disruption to services to and from London Waterloo; trains may be revised or delayed by up to 15 minutes.
The disruption is expected to continue until midday.
Network Rail (@networkrail) April 24, 2017
Elsewhere, a faulty train at North Greenwich station has led to delays on the entire Jubilee line. Transport for London said tickets will be accepted on London Buses via any reasonable route.
Meanwhile, Thameslink services are running normally again after earlier disruption due to a fault on a train between Bedford and West Hampstead.