s01e01: The 2 main characters undress to get into a bath together and there is some dirty talk beforehand. An American businessman states that he wants to have sex with the main characters' show.
s01e05: Matt LeBlanc takes one of the main characters to the Rape Prevention Task Force committee. Stephen Mangan's character is seen masturbating over a porn video of Morning Rudolph.
s01e06: The porn video scene from the previous episode in the 'Previously...' part at the beginning. Stephen Mangan is leaving a message for his wife and says that he did indeed masturbate. His wife was watching while he was masturbating and frequently refers to him 'wanking' the video.
A reasonably long (one minute or so) scene of a topless woman in s02e06, and in the 'previously' montage of s02e07, it is not particularly sexualised.