Cardiff is home to the Welsh media and a large media sector with BBC Wales, S4C and ITV Wales all having studios in the city. In particular, there is a large independent TV production industry sector of over 600 companies, employing around 6000 employees and with a turnover estimated at £350 m. Just to the north west of the city, in Rhondda Cynon Taff, the first completely new film studios in the UK for 30 years are being built, named Valleywood. The studios are set to be the biggest in the UK. In 2011 the BBC completed the Roath Lock studios in Cardiff Bay to film dramas such as Casualty, Doctor Who, and Pobol y Cwm.