Terminal 3 re-opens its doors to the public 15 months into the global pandemic, with 11 Virgin flights set to take off, but teething problems threaten to delay one of the departures. It's business as usual in Terminal 5 as Passenger Experience Manager Tas is called to deal with an arriving passenger who is refusing to pay for his mandatory Covid tests, while the City of London Corporation's Animal Reception Centre have quarantined two dogs who have flown into the USA without proof of treatment for tapeworm.

It's all systems go at Heathrow's in-house Covid-19 testing centre, as service manager Joel and staff deal with an increasing amount of passengers needing their assistance. Meanwhile inside Terminal 2, the cleaning team are on the hunt for a special kind of vagrant which requires some very hi-tech infrared equipment.