Christopher David Addison is a Welsh comedian, writer, actor, and director. He is known for his role as Ollie Reeder in the BBC Two political satire series The Thick of It and Toby Wright in its spin-off film In the Loop. He was a panellist on several editions of TV comedy panel show Mock the Week. He is known for lecture-style stand-up comedy shows, two of which he later adapted for BBC Radio 4.
Addison starred in the Sky Living comedy-drama Trying Again and appeared in three episodes of series 8 of Doctor Who. He co-created and starred in the BBC Two sitcom Lab Rats. On radio, he hosted the weekly comedy news satire show 7 Day Sunday on BBC Radio 5 Live from 2009 to 2010. In 2020 he co-created the FX parental-comedy series Breeders, starring Martin Freeman.