Heathrow has announced contingency plans to keep the airport operating despite a 10-day strike by security guards. Members of the Unite union will walk out on Friday in a dispute over pay.
The airport says it is deploying an extra 1,000 members of staff and its "entire management team" to help passengers. Those planning to travel have been warned of delays going through security.
A Heathrow spokesman said: "We will not let these unnecessary strikes impact the hard-earned holidays of our passengers. Our contingency plans will keep the airport operating as normal throughout.
