Unite, which represents more than 3,000 aircraft fitters and engineers at Airbus, said 90% of members voting in a ballot had chosen industrial action, which will go ahead unless the European planemaker presents an improved pay offer.

Unite said the strikes, planned for September 2-3, 10-11, and other dates yet to be determined, from September 15, could disrupt wing production for Airbus’s commercial and military aircraft programmes and delay deliveries.

However, Airbus said: “We are not currently concerned about the impact on year-end deliveries.”

The planemaker also said it had made a “competitive and fair” pay offer in 2025 following previous pay increases totalling more than 20% in the last three years, in addition to a 2,644 pounds ($3,569) bonus payment in April.

“Our priority remains to find a resolution together with the trade union that ensures the long-term competitiveness and success of Airbus in the UK,” Sue Partridge, Airbus UK’s country manager for commercial aircraft, said in an emailed statement.

Unite said it had asked Airbus for a pay offer that reflects rising inflation and the cost of living.

Data published earlier on Wednesday showed British inflation had reached 3.8% in July – its highest in 18 months.

“Airbus is generating billions in profit; workers deserve a fair deal,” Sharon Graham, Unite’s general secretary, said. “Our members are simply seeking fairness not favours.”