Roath Lock provides a permanent home to three flagship dramas - Doctor Who, Casualty and Pobol y Cwm.
The studios form the BBC’s largest drama production centre in the UK, part of the Porth Teigr project in Cardiff’s former docklands.
It was built following the BBC’s commitment in 2008 to double its television network production in Wales.
The name Roath Lock was chosen following consultation with BBC Wales staff.
The lock refers to the waterway linking Roath Basin to Roath Dock and the bay, and the studios are built next to the former lock-keeper’s cottage.