Tube drivers at several London Underground depots will strike on 6 and 14 June.
RMT and Aslef members on the Jubilee Line will strike to demand improved work/life balance, as a proposed new timetable threatens to increase weekend working.
Aslef members at the District Line’s Acton depot will strike again on the same dates, following an action on 13 April, over abuse of disciplinary procedures. April’s strike had a significant impact on the service, with RMT members refusing to cross Aslef’s picket lines.
RMT has also declared a dispute with the train side management on the Piccadilly Line, where a ballot for strikes is expected soon.
On the Bakerloo Line, RMT called off a planned strike ballot of its driver members after an unfairly sacked colleague was reinstated.
Elsewhere on London Underground, RMT is launching a new campaign to organise Night Tube station workers.
The company agreed to a review of the round-the-clock service which runs on certain lines on Friday and Saturday nights, including a look at the staffing levels.