Commuters are preparing for travel chaos as tube workers are set to strike for seven days next month.

London Underground workers are to stage a series of strikes next month in a dispute over pay and conditions, the RMT union announced.

The workers will begin the week-long walkout on Friday, September 5.

The union said that rail bosses 'refused to engage seriously' with their demands on pay as well as concerns about fatigue management and 'extreme shift patterns'.

Underground workers were also demanding a reduction in the working week and to honour previous agreements made with staff.