Filmed in November 2020, the airport was hit with the news England would enter a month-long national lockdown.
As a result, travel was reserved only for those working, repatriating home or for essential purposes as set out by the Government.
Demand for flights had already dropped by more than 60 percent worldwide, according to the documentary, and Heathrow had moved from running around 650 flights per day to just 88.
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When it comes to new measures, no cost is spared.
As the documentary points out, they have put in place a number of “weapons of mass disinfection”.
“We’ve got a one-way system to stop people from mixing and bumping into each other,” said Denny.
“At the ticket desk, they’ve got perspex screens in between. The self-service machines [also have] perspex screens.”
What’s more, self-service screens can also be sprayed down by an automatic device that shoots a fine mist of sanitiser over the touchpoints
They explain their job is to “spray everything that people touch” with a special “D10” mixture which is “killing corona”.
Furthermore, dedicated Covid marshals wander the functioning terminals, keeping an eye out for anyone not obeying policies.
“We’ve got them out and about making sure everyone’s wearing a face-covering make sure they are social distancing and sticking to the rules,” said Denny.
However, perhaps the most eye-catching and costly of the new measures are a series of robots who are tasked with keeping the toilets fully sanitised.
The machines appear to mechanically move down through the cubicles, spraying a mist of disinfectant over every surface including walls and floors.
“They’re not cheap, but if that’s what excites you and to keep a bit more confidence in people coming and checking in and going on their flights,” continued Denny.
“Obviously they can’t be in lockdown but this is what it’s about until it gets sorted.”