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There's been good news and bad news in the world of TfL lately. Union bosses confirmed that the night tube will definitely be delayed until next year (boo!) but on the plus side, there are rumours that London buses might run on Christmas Day for the first time (yay!). But now we've got some more bad news, as tube workers on the Piccadilly line are planning a walkout. Around 400 members of the RMT union have backed strike action after a dispute with TfL over working conditions. The union hasn't set a date for the strike yet but if it does go ahead, let's just hope it coincides with that house party in Cockfosters you've been trying to get out of.
Take a look at the top five worst times to be on the tube.
Or find out how to get rid of all your loose change at tube stations.