London commuters are facing Tube delays on a number of lines during rush-hour on Wednesday afternoon.
There are minor delays on Bakerloo and Jubilee lines, while there are severe delays on the part of Metropolitan Line, Transport for London has said.
Earlier disruption on Thameslink services between London St Pancras International and London Blackfriars has been cleared after an early fault on a train.
National Rail said earlier damage to an electric third rail between East Croydon and East Grinstead / Uckfield, which caused disruption to Thameslink and Southern trains, has also been cleared.