Commuters faced disruption during rush-hour this morning as Tube workers continued a day-long strike on two London Underground lines, Central and Waterloo & City.
The 24-hour walkout, which began yesterday evening, has already caused severe delays on the Central line.
As a knock-on effect many other Tube lines are experiencing increased demand with travellers being forced to queue outside of stations.
The RMT strike action is in protest to proposed movement of staff.