Oops! You need to enable JavaScript in your browser to start watching. ITV Heathrow: Britain's Busiest Airport Series 6 - Episode 6 This time at Heathrow we're in the coloured lanes of customs and excise, rummaging through passengers' carry on, on the lookout for secret stashes. Thu Thursday 11 Nov 8.30pm 30 mins 6 days left Share this episode: Copied to clipboard Share on Facebook Share on Twitter Copy link to share