Brian Gittins is a lonely inventor in rural Wales, who builds quirky contraptions that seldom work.

One day while scavenging scrap, he comes across a mannequin’s head, which inspires him to attempt to create an artificially-intelligent robot, though he is unable to activate it.

The childlike Charles becomes more curious and eager to explore more of the world, but Brian instructs him to stay nearby at all times.

Film4 Productions boarded the feature-length adaptation of Archer, Earl and Hayward's short film in early 2019, followed by the BFI.

Principal photography took place on location in rural North Wales, including Cwm Penmachno and Llyn Gwynant, during the COVID-19 pandemic.

The website's consensus reads: "Brian and Charles may test the patience of quirk-resistant viewers, but the innate charm of this odd couple comedy is easy to compute.

"[8] Metacritic, which uses a weighted average, assigned the film a score of 66 out of 100, based on 29 critics, indicating "generally favorable" reviews.