Two 24-hour strikes by London Underground drivers will go ahead on Tuesday and Thursday, as talks aimed at averting the action have broken down.
Members of the Rail, Maritime and Transport (RMT) union are to walk out in a dispute over plans by Transport for London (TfL) to introduce a voluntary four-day working week.

The two sides met for last-ditch talks on Monday, but the RMT union said TfL "failed to provide assurances" over concerns about longer working hours and driver fatigue.

TfL said it was "bitterly disappointing" but aimed to run at least half of Tube services.