The Radio Times carried a summary stating that this episode was set in 2002, but this isn't corroborated by what appears on screen.
At the start of the episode Jane (Sylvestra Le Touzel) claims "I was born in 1982, which makes me eighteen", which means the latest the episode could be set is the year 2001.
At the start of the episode Jane (Sylvestra Le Touzel) claims "I was born in 1982, which makes me eighteen", which means the latest the episode could be set is the year 2001.