The original short was shot for just £500 in the Welsh countryside. The cast and crew all rented an Airbnb for the duration of the shoot.
The film was originally set to start filming on the very first day that the UK went into lockdown for the first time in the Covid-19 pandemic. They had to wait six months before they could start making the film again.
After the original short debuted, Film4 got in contact with the production team about expanding it into a feature film. Originally, the team were considering turning it into a TV series.
Brian's cottage (a real location) had no heating which proved problematic when shooting in the midst of December.