Travellers stranded outside the entrances of Heathrow Airport Terminal 5 after British Airways flights where cancelled are seen at Heathrow Airport in west London on May 27, 2017. British Airways said May 27 that it had cancelled all its flights out of major London airports Heathrow and Gatwick after an IT systems failure, warning people not to travel to the congested hubs. People saying that they are not allowed to enter the terminal
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