The London Underground employee’s union RMT has announced that members will strike four times in the space of two weeks.

The Tube worker’s will walk out on19th, 27th, 29th June and 1st July.

The industrial action has been prompted by the dismissal of colleague Arwyn Thomas and the refusal to reinstate him while he is awaiting the outcome of an employment tribunal.

London Underground claims the strikes are premature action for this case and is mystified by the union’s action; however the RMT’s general secretary Bob Crowe reacted by saying LU had “dragged its heels” which left them with no other choice.

A Transport for London spokesman said: “It is completely mystifying that, having agreed with London Underground that the tribunal process should take its course, the RMT leadership is now threatening strike action again.”

RMT drivers will strike between:

0901 on 19th June and 0300 on 20th June

0901 on 27th June and 1159 on 28th June

Noon on 29th June and 1159 on 30th June

Noon and 2100 on 1st July.