Watch Britain's Busiest Airport: Heathrow Season 5 Episode 4 Online
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- COUNTRIES: United Kingdom
- Subtitles: English
Flying into Heathrow are an endangered parrot and a polar vortex. Whilst Officers Dave and Terry hunt for a wanted man gone missing on a plane, airside Ian and slicker-for-the-rules Steve battle snow in a blizzard to keep the runways open.