Overrunning engineering works have left commuters facing a miserable commute this morning as a key Tube line suffered disruption.
The late finish left the Circle Line with severe delays in a clockwise direction, while Londoners travelling the other way face minor delays this morning.
Transport for London (TfL) advised passengers their tickets would be accepted on bus services.
Meanwhile the London Overground continues to operate a reduced weekday service between Gospel Oak and Barking, with just four car trains running every half an hour, supplemented by replacement bus services.
The latest travel woes come just a day after more rush hour misery hit five Tube lines in a commuting nightmare.
Severe delays disrupted the Circle Line, Hammersmith & City Line and the Metropolitan Line yesterday after a signal failure at Aldgate.
London Overground also suffered delays between watford Junction and Euston after a track fault had to be addressed.