Doctor Who, calling it "so much work".
In the latest issue of
Total Film magazine, Billie, who played Rose Tyler on the show, explained that: "It's the face of a family show and that's a lot of responsibility that I'm not comfortable with."
She did throw a name in the hat for who should play the titular Time Lord next, however.
BBC
"Oh, I know who! Helena Bonham Carter," she said. "She's got that madcap energy – she's a ruddy powerhouse."
Billie's recent projects have seen her take on more creative input beyond acting. She made her directorial debut with
Rare Beasts at the 2019 Venice Film Festival, and co-created