The long running dispute between British Airways and the union which represents the interests of its cabin crew is set to continue into its third year. Len McCluskey, the incoming leader of Britain’s largest union Unite, is expected to announce today that its members will have his total support for as long as it takes for a deal to be hammered out with BA.

Unite has already written to its members saying it will be taking the airline to the high court in order to get back the travel perks previously withdrawn from employees who took part in industrial action. The result of a strike ballot is due next week which, if in favour, could see cabin crew walking out as soon as the end of the month.

British Airways has said that any industrial action will not affect its long-haul services. It will also have no affect on schedules out of City and Gatwick. Tensions between staff and management are set to grow as Unite publishes the results of a survey which suggests that three-quarters of the airline’s staff have been the subject f, or have been witness to, bullying in the workplace.

Outgoing general secretary of Unite, Tony Woodley, said it was important that Willie Walsh, BA’s chief executive, resume talks to try and put an end to the dispute.

A spokeswoman for the carrier said it did not accept the results of the survey. She pointed out that BA would never tolerate harassment or bullying of any of its colleagues.