Oops! You need to enable JavaScript in your browser to start watching. ITV Heathrow: Britain's Busiest Airport Series 7 - Episode 4 Spring is about to be sprung and Heathrow is readying itself for a flurry of passengers as it's announced that holiday makers can travel to 12 new countries. Wed Wednesday 25 Aug 8pm 30 mins Share this episode: Copied to clipboard Share on Facebook Share on Twitter Copy link to share