Major disruption is expected this week as staff strike at Heathrow Airport. About 1,400 security officers are expected to take part in the industrial action, which will run over the King's coronation.
Unite confirmed that employees will walk out from 4 to 6 May, 9 to 10 May and 25 to 27 May in a dispute over pay - causing "inevitable disruption and delays" to hundreds of flights.
The union's general secretary, Sharon Graham, said: "Yet again, we have a chief executive who thinks it is acceptable to boost his earnings while he denies his own workers a decent pay rise.
