Around 100 security officers and terminal technicians at Birmingham Airport are to strike from 18 July.

Trade union Unite has warned the strikes, which it describes as ‘indefinite’, will lead to delays for carriers such as TUI, easyJet, Wizz, Ryanair, Lufthansa and Emirates, but the airport said the impact will be ‘limited’.

The ballot for strike action closed on 29 June, with members rejecting a pay offer that it said ‘would leave many workers unable to pay their bills as well as causing more staffing shortages’.

Unite General Secretary Sharon Graham said: “Birmingham Airport has returned to profitability but expects its low-paid workers to swallow a real terms pay cut after successive attacks on their wages and terms and conditions.

“This is completely unacceptable at a time of rising living costs. Unite’s laser-like focus on jobs, pay and conditions means these workers will receive the full unflinching support of their union as they strike for a fair pay rise.”

A spokesperson for Birmingham Airport said it doesn’t anticipate cancellations during the strike.

The spokesperson said: “We note the union, representing a minority of our workforce, is threatening strike action from July 18 – despite our current pay offer being well above the current UK average.

“However, if strike action does take place, we are confident the impact will be limited, and we do not anticipate any cancellations. Our advice to customers remains to arrive at the airport in line with guidance from their airline.”