Passengers currently have to expect long queues when entering the UK. The problems with the so-called e-gates had already begun on Friday evening, including at Heathrow, Gatwick and Manchester airports.
Depending on the airport, 60 to 80 percent of travelers usually passed through e- gates. Their passports would now have to be checked manually, which would take time. The British airline British Airways had already cancelled several flights at London's Heathrow Airport before the Whitsun weekend due to IT problems.