It is estimated that making the film COVID-19 secure added an additional 15% to the budget. The set is mostly limited to a single, large house.
Neil (director) said the trickiest part to film was when all actors were sitting by the breakfast table. Up until that point, he mentioned he felt quite confident in his filming ability, but having all of the actors in one place around the table made him realise how tricky it is to shoot everyone's line of vision so it looks good on screen.