Flights are now back to normal at the UK’s biggest airport after a protest led to some cancellations.<br /><br /> Angry at plans for a third runway at Heathrow, members of the direct action group “Plane Stupid” chained themselves together across a runway already in use.<br /><br /> http://www.heathrowairport.com/about-us/company-news-and-information/airports-commission/our-proposal<br /><br /> 13 flights were cancelled during the seven-hour interruption. Heathrow says operations are now back to normal.<br /><br /> UPDATE: All protesters safely removed & runways operating as normal. Passengers are advised to check flight status for delays/cancellations.— Heathrow Airport (@HeathrowAirport) 13 Juillet 2015<br /><br /> Concerns have been voiced over security after it emerged the group cut through a perimeter fence to gain access.
