‘If things start going wrong, then they unravel very quickly.’ Travel Journalist Simon Calder says there has been a 'cyber-attack' disrupting airports in Europe, as Heathrow experiences severe delays, and travellers are being warned to check with their airlines. #heathrow #gbnews #flightdelay #cyberattack #uknews Keep up to date with GB News at gbnews.com or on X @GBNEWS Support GB News by becoming a member from just £5 per month: gbnews.com/support