According to Robert Webb in an interview with Graham Norton, he and Olivia Colman, who play a naturist couple, were told that they would be pixelated in the nude scenes, and the first time they found out they weren't was at a screening on the film. Webb recalled a moment when Jessica Hynes turned round and said "Oh-ho-ho" at him. Both Webb and Colman have since spoken negatively about their experiences of the film and dissatisfaction with the end product. Colman described it as "the worst experience of my life."
On the DVD, one of the special features is 'Choose Your Own Winner', where you get to watch a scene with your preferred winner.
The film was acted out as an improvisation and was shot entirely in chronological order. The actors were not even given call-sheets in order to increase the film's sense of unknowing and the improvisational style. Director of photography, Dewald Aukema explains that "The film is very versatile, as there is no strict script, it is interesting that anything could happen in a particular take, and it could be used effectively in production, it's really up to the actors how they develop the scene and their characters."