I think I've seen some pics of a basic interview set up there but little more. It was just a contribution facility for interviews into the regional news programme.
Many of the other companies had London facilities, often in former theatres. In that period of the infancy of TV I guess TV companies were competing with the West End for access to talent, so being able to make a show in London rather than get people to travel to Manchester had its benefits.
Write that down in your copybook now.