By Popular Demand 2

Only in the UK, so far. Here's Variety, from behind their f***ing firewall:

"With live shows based on TV properties, it's important not to be too early in the lifecycle of the brand," says Craig Stanley, head of live entertainment at BBC Worldwide, the show's producer. ... "For 'Doctor Who,' it is still early in the US."

Obviously Cardiff, right? No venue could be cooler.