In the sequence when DI Richard Poole apprehended one of the suspects at the marina (47:35), the incidental music is "Soul Limbo" by Booker T and The MG's. This is the theme music for the BBC cricket program Test Match Special, and an appropriate choice, given the method used to stop the suspect.
The clinic's artwork is all based on paintings by Tamara de Lempicka.
Emma Pierson (Anna Jones) & James Fleet (Jeremy Tipping) also worked on Little Dorrit (2008) as Fanny Dorrit & Frederick Dorrit respectively.
Ben Miller (DI Richard Poole) & Emma Pierson (Anna Jones) also worked together on The Worst Week of My Life (2004) as Howard Steel & Sophie Cook respectively. They also appeared together on four episodes of the comedy sketch show Armstrong and Miller (1997) together.