Secret Diary of a Call Girl Main cast, played by Gemma Chan Episode 4x02: Episode 2 (Feb 8, 2011) Episode 4x04: Episode 4 (Feb 22, 2011) Episode 4x05: Episode 5 (Mar 1, 2011) Episode 4x06: Episode 6 (Mar 8, 2011) Episode 4x08: Episode 8 (Mar 22, 2011)