![Passengers at Heathrow were forced to queue for security for hours throughout the summer. Reuters](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/PL5RNVVB774SBU26W7RDL7LOXI.jpg?smart=true&auth=22451cbdb20f2917faedcde10ec4ce1302da53751187a306349287d5b7c78ede&width=400&height=225)
Passengers at Heathrow were forced to queue for security for hours throughout the summer. Reuters
Passengers at Heathrow were forced to queue for security for hours throughout the summer. Reuters
Heathrow urged to sort out problems as airlines suffer 'negative impact'
UK's busiest airport sparked row with airlines over its limit on passengers