Millions of commuters face travel misery as London Underground workers go on a 48-hour strike.It started at 7pm on Tuesday after last-minute talks broke down. Unions are demanding better pay and more security for thousands of workers threatened by job cuts. Chamber of Commerce chief Colin Stanbridge said a compromise must be found: “We’ve got the Olympics coming up. I mean, are we going to have a re-run of this sort of strike action when the Olympics come up and they feel they’ve got some sort of lever? We have to come to some sort of understanding or some sort of deal that allows London to get on with its business.” London Mayor Boris Johnson has condemned the move and says unprecedented measures have been put in place: “Oyster Pay-as-You-Go will be available on the railways, we are making sure there will marshalled bike-rides, there will be taxi schemes, there will be maps to help people get there by walking that we’re going to hand out at the tube, and a variety of other measures that we’re putting in place to help people get around. It’s the single biggest package of anti-strike measures that’s ever been put in place,” he said. The strike comes at a bad time as thousands of football fans plan to travel to north London’s Wembley Stadium for England’s World Cup qualifying match against Andorra on Wednesday. More than three million people use the London Underground every day. Service isn’t expected to return to normal until Thursday evening.