Mayor of London Boris Johnson has said his office is doing "all we can to get people to work" on the first morning of travel chaos caused by 48 hours of strike action by London Underground workers.
In a series of tweets ending with the hashtag #pointlessstrike, Mr Johnson said "disrupting millions of people's lives won't work" and urged union bosses to "come back to the table and talk to (Transport for London)".
Members of the RMT and TSSA unions walked out at 9pm last night for 48 hours in protest at the closure of ticket offices, with the loss of several hundred jobs.
Union leaders were under pressure tonight to call off the strike after it emerged new peace talks would take place on Friday.
Bob Crow has told ITV News that he does not use ticket offices at London Underground stations.