sitcom starring Addison and co-written with Carl Cooper. Lab Rats featured cast members Jo Enright, Geoffrey McGivern and Dan Tetsell, with whom Addison had worked previously on the radio adaptations of his one-man shows The Ape That Got Lucky and Civilisation. Lab Rats was a return to the traditional, joke-heavy, studio based sitcom format that has fallen out of fashion in recent times in favour of the single-camera sitcom. The series was not generally well received by critics and was not renewed for a second series. Mock the Week After several guest appearances on the comedy panel show Mock the Week, in September 2011 Addison became a regular panellist, appearing in every episode since the second part of series 10 until series 12 (2013). He appeared alongside other regular panellists Hugh Dennis and Andy Parsons and the show's host, Dara Ó Briain. Other TV acting projects In 2014 Addison starred in the Sky Living series Trying Again. Guest appearances and hosting In 2000 Addison co-hosted the short-lived Channel 4 comedy series Dotcomedy with Gail Porter. This was a late-night, risque show featuring video clips and other humour derived from the Internet. He has appeared on Have I Got News for You six times, Would I Lie to You? once and 8 Out of 10 Cats twice. Addison also appeared in episode 3 of series 5 of Live at the Apollo. He has thrice appeared on QI. Addison appeared on The Graham Norton Show on 16 April 2009 promoting In the Loop. On 18 April 2010 he appeared on The Andrew Marr Show to comment on the week's political issues, including the volcanic ash cloud from Iceland and The First Election Debate. He appeared on Skins as Professor David Blood, the college director of Roundview College and father of third Generation character Grace Violet. On 4 November 2010 Addison hosted the BBC's Have I Got News For You, having previously been a guest on the show. In the summer of 2011 Addison hosted an E4 comedy chat show called Show and Tell, with each of the 8 episodes featuring three guest stand-up comedians. Addison has also made an appearance in children's television show Horrible Histories. In August 2014, it was announced that Addison would make a guest appearance in the two-part series finale of the eighth series of Doctor Who with his former The Thick of It co-star Peter Capaldi, who