[Matrix]

Because the studio space is shared with S4C they can’t have a physical tower screen.

Wow! Well that’s pretty stupid if BBC set design is restricted by another broadcaster. Get S4C to have their own studio!

If you’re interested in the relationship between the BBC and S4C—and no, they don’t dictate set designs—then the articulation agreement which runs to ‘28 is quite fascinating. 

On the pres point, my understanding was that Cardiff went slightly early and spent a pretty penny so they’re reluctant to fork out for one of those screens just at the minute.