Series 3 is the third series of Peep Show. It focuses mostly on the long-distance relationship between Mark and Sophie, culminating in their engagement in the episode Quantocking, the series finale. Jeremy's side of the story is mostly about him trying to win back his ex-girlfriend Big Suze.
Sophie is a prominent character in Series 3, but isn't shown very often due to her relocation to Bristol. Super Hans becomes extremely prevalent in this series, showing up in three of the six episodes.
Big Suze makes her first official appearance in Series 3.
In the episode Sectioning, it is revealed that in college, Mark had a brief sexual encounter with a woman who he called "Carol Banana Face". She is mentioned again in the deleted scenes of Quantocking.
Series 3 is the first series in which Sophie has bangs.