On Thursday (20 April), the union confirmed security personnel at the airport will strike for a further eight days  in May as part of an ongoing dispute over pay.

In response to the upcoming demonstrations, a Heathrow spokesperson said: "We kept Heathrow running smoothly during the first 10 days of Unite’s failed industrial action, and passengers can have confidence that we will do so again this time.

"We will not let Unite disrupt the flow of visitors to the UK during such an important period for the country."

The airport claimed to have met with Unite and put forward an improved deal that gives colleagues the certainty of inflation-matching pay for two years – 10% this year and a CPI linked increase in 2024, as well as a £1,150 lump sum. 

"The majority of Heathrow colleagues do not want to strike," the spokesperson added. "Unite needs to let their members vote on this deal.

"Each day that Unite continues to refuse to let colleagues vote on this offer costs colleagues money they deserve now."