Despite the Shetland Islands being the most northerly place in the UK, and having bad weather for most of the year, sprinklers were used to create fake rain in some of the scenes.
Actor Steven Robertson has said that one of the things he loves most about filming in his hometown of Shetland is that he can speak in the Shetland dialect. When he uses the dialect and some Shetland words down south, nobody can understand him.