Strike action by thousands of London Underground workers is to go ahead after union leader Bob Crow said that London Mayor Boris Johnson has refused to meet with him over planned job cuts.

Crow, the general secretary of the Rail, Maritime and Transport Workers Union (RMT), said his union's negotiators were still in talks with officials from Transport for London and would suspend the industrial action if the Major of London, Boris Johnson, suspended plans to close all ticket offices on the network.

Members of the RMT and the Transport Salaried Staffs Association are due to walk out for 48 hours from 9.30pm on (Tuesday) 4 February and again a week later over job losses they say will follow the closures.