British Airways is facing further cabin crew strikes after a court upheld an appeal by the flight attendants' union against an injunction blocking industrial action.
The flag-carrier, which secured the injunction at London's High Court earlier this week, is to implement its contingency plan to keep operations as normal as possible.
"We are very disappointed for our customers that Unite's appeal has been upheld and that the union intends to go ahead with its unjustified and pointless strikes," says the airline.
"Unite's strikes have failed twice and they will fail again."
The union had previously called strikes for 18-22 May - dates which were interrupted by the injunction - and three other five-day periods this month and next.
Unite is trying to put further pressure on BA by writing to the airline's main institutional investors asking them to use their influence to "get BA to see sense" and "rein in" the carrier's "financial irresponsibility".
It says the carrier has told the High Court, which ruled in favour of the appeal against the injunction today, that strikes could cost the airline another £138 million ($198 million) on top of the £45 million from earlier industrial action in March.
"We want a prosperous company, succeeding in a difficult competitive environment," the union adds. "Without that success, our members won't have jobs. That is why we have worked so hard to get an agreement with BA in relation to the cabin crew dispute.
"But all these efforts have been thwarted by a management that is, we believe, putting ego and machismo ahead of your interests as investors and shareholders - and playing fast and loose with the airline's future."
Unite says a settlement is "within reach", with just a couple of issues outstanding between the two sides, and says that only the company's "vindictiveness" is obstructing an agreement.