ITV Heathrow: Britain's Busiest Airport Catch up on the ITV Hub Documentary series going behind the scenes at Britain's busiest and biggest international airport - London Heathrow. 4 episodes available to watch Share this programme: Share on Facebook Share on Twitter Share on Google+ Series 4 Latest Episode 4 Tue Tuesday 27 Nov 10.50pm The staff at Heathrow battle the elements when the Beast from the East arrives. Episode 3 Tue Tuesday 20 Nov 11.25pm There's trouble when a mobile crane enters a live airfield. Episode 2 Fri Friday 11 Jan 8.30pm Documentary series. Demi and Sue wrestle with a drunk in Terminal 2. Episode 1 Fri Friday 11 Jan 8pm Passenger experience manager Demi deals with disgruntled passengers.