BBC Roath Lock Studios is a television production studio that houses BBC drama productions including Doctor Who, Casualty, and Pobol y Cwm. The centre topped out on 20 February 2011 and filming for such productions commenced in autumn of the same year.

Casualty (stylised as CASUAL+Y) is a British medical drama series that airs weekly on BBC One. Created by Jeremy Brock and Paul Unwin, it was first broadcast in the United Kingdom on BBC One on 6 September 1986. The original producer was Geraint Morris. Having been broadcast weekly since 1986, Casualty is the longest-running primetime medical drama series in the world.