Oops! You need to enable JavaScript in your browser to start watching. ITV Heathrow: Britain's Busiest Airport Series 7 - Episode 12 It's summer and temperatures at Heathrow have reached a balmy 32.2C. Service manager Joel is in the thick of it at the airport's express Covid testing centre. Tue Tuesday 26 Oct 7.30pm 30 mins Share this episode: Copied to clipboard Share on Facebook Share on Twitter Copy link to share