Rail union RMT has confirmed three strike dates after an 'overwhelming vote' of Piccadilly line drivers over what they claim is a “comprehensive breakdown in industrial relations”.

RMT confirmed on Wednesday (March 9) that three sets of 24-hour strike actions by nearly 400 train operators across the Piccadilly line will take place from 9pm on Wednesday (March 23), from midnight on Tuesday (April 19) and from midnight on Thursday (April 21).

The union said that 85% of members voted for the strike action due to claims of bullying and harassment of London Underground staff.

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RMT General Secretary, Mick Cash said: “The wholesale abuse of procedures and agreements by management on the Piccadilly line is rife and amounts to the development of a campaign of bullying, harassment and intimidation that the union will not allow to continue.

“RMT will not sit back and allow individual members to be picked off by a vindictive and aggressive management who are continuing to drag their heels over addressing fundamental safety issues which leave staff in a vulnerable and exposed position.

“RMT will not watch from the side lines while our members are boxed into a position where they are left to take the rap for repeated management failures that the union has been raising for years now.

“The combined weight of these abuses and failures has built up to a comprehensive and fundamental collapse in industrial relations that the company have done nothing to address and which has now left RMT with no option but to call strike action following the overwhelming vote by our members."