London's mayor has been urged to cancel his trip to next week's Conservative Party conference and hold talks to avert another 24-hour Tube strike which will cause travel chaos.
Thousands of members of the Rail Maritime and Transport union (RMT) and the Transport Salaried Staffs Association (TSSA) are set to walk out for 24 hours from 7pm on Sunday in a row over 800 job cuts.
Mayor Boris Johnson spelled out contingency plans to deal with the industrial action, which will coincide with the Tory conference in Birmingham.
TSSA leader Gerry Doherty said: "Boris seems determined to steal the show from David Cameron next week with a bout of union-bashing to cheer up delegates attending the Tory conference.
"Even at this late hour, we would urge him to stop playing to the gallery and enter into urgent talks to resolve this dispute before Sunday evening.
"This dispute is too serious for him to be playing politics. Cheap applause in Birmingham may help him one day to become leader of the Tory Party but it will not help the London travelling public to get to work on Monday."
Transport bosses are laying on more than 100 extra buses, increasing capacity for more than 10,000 more journeys on the river, organising marshalled taxi ranks and delaying or curtailing planned roadworks.
Volunteers will also be positioned at Tube, bus, and rail stations to help commuters with their journeys and provide maps and other information, and people who own a bike are being encouraged to cycle to work.
Transport for London said London Underground ran a third of its normal services during a walkout last month, carrying more than a million people.
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Mr Johnson said: "As we saw in the last strike, the belligerent actions of the union leaderships will not bring London to a halt. They may disrupt Londoners, but they will not stop us from getting around our city. We will keep London moving."
