London tube strikes affecting the Jubilee and District lines have been confirmed this morning by the Rail, Maritime and Transport (RMT) union.

This means there will be no Jubilee line this Wednesday 6 June and severe delays on the District line.

A second 24-hour strike has also been planned for next Thursday 14 June.

The strikes are a response to the imposition of new timetables that the RMT say override current rostering agreements.

The train drivers’ union Aslef is also holding action on the Jubilee line and District line on the same dates in a separate row about the imposition of new duty schedules and failure to follow agreed procedures on the District line.

RMT talks were held about the dispute last Friday, but ended without a resolution.

In a statement, RMT officials said that they made every effort to try and reach an agreement, but that tube bosses "refused to allow serious progress to be made" on the issues at the heart of the dispute, with the company failing to put forward a single proposal.

Mick Cash, RMT General Secretary, said:

“RMT is bitterly disappointed that tube managers have knocked back an opport‎unity to negotiate a settlement to this dispute in extensive talks that broke up on Friday. They failed to put a single proposal forwards.

“It is outrageous that tube managers are trying to bulldoze through timetable changes without agreement that ride roughshod over existing rostering agreements. It is symptomatic of a management that is out of control and hell bent on imposing change through diktat rather than through the established negotiating machinery.

“Drivers are angry at the impact on work-life balance and rightly see this move as the thin end of a very long wedge that could see processes and agreements unilaterally shredded by tube bosses.

“RMT remains available for further talks but the action starting this week goes ahead as planned and the massive disruption it will unleash is solely down to the intransigence of tube management.”‎

Tube stations predicted to be busier than usual due to the strikes include Stratford, West Ham, South Hampstead, West Hampstead Thameslink and Hendon.