Services on the Central and Northern Lines are disrupted this afternoon, after Tottenham Court Road was closed due to a power failure.
Tottenham Court Road: the station is closed while we respond to a power failure.— Central line (@centralline) December 5, 2016
Tottenham Court Road: the station is closed while we respond to a power failure.— Northern line (@northernline) December 5, 2016
Meanwhile, there are delays on the Circle Line due to an "absence of staff", according to Transport for London.
Minor delays on the entire line, due to absence of train staff.— Circle line (@circleline) December 5, 2016
Elsewhere, the Piccadilly Line is still experiencing severe delays - which are likely to continue until next month, TfL admitted today.
The line has been running a disrupted service for over a week now, with half its fleet of trains out for repairs.