British Airways cabin crew have rejected the airline's final offer aimed at ending their long-running dispute, raising the threat of fresh strikes.
Members of the Unite union voted by 3,419 to 1,686 against the offer, dashing hopes of an end to the bitter row over cost savings, travel concessions and disciplinary issues.
The union had balloted around 11,000 of its members without making any recommendation on whether to accept the proposed deal. Union leaders will now meet to decide their next move.
Cabin crew have taken 22 days of strike action since March, costing the carrier more than £150m, and one of the options being considered is to hold another ballot for further walk-outs, which could take place from September.
The 2-1 majority against the offer follows previous ballots on industrial action, which returned much bigger votes in favour.
Unite postponed a strike ballot last month after BA tabled the new offer, but the union's leadership decided against making any recommendation on whether it should be accepted.
The dispute started last year over BA's plans to cut costs by reducing the number of cabin crew on aircraft, but the row intensified after the airline withdrew travel concessions from staff who went on strike. Relations worsened after BA took disciplinary action against union members as a result of the dispute, including a number of sackings.