Oops! You need to enable JavaScript in your browser to start watching. ITV Heathrow: Britain's Busiest Airport Series 7 - Episode 6 We go behind the scenes of the test and trace process. On the frontline is Joel, the manager of Heathrow's testing centre, who has to deal with an irate family. Wed Wednesday 15 Sept 8pm 25 mins Share this episode: Copied to clipboard Share on Facebook Share on Twitter Copy link to share