Claudia Winkleman (in-universe)
From Tardis Wiki, the free Doctor Who reference
Claudia Winkleman was a presenter.
She once traveled with the Eleventh Doctor. (TV: The Doctor Drops In)
She once attempted to seduce the Eleventh Doctor. She did so unsuccessfully. (NOTVALID: The Doctor Appears)
She also attended Sprout Boy's Christmas party and met the Twelfth Doctor. (NOTVALID: Sprout Boy meets a Galaxy of Stars)
Behind the scenes
Her half-sister is Sophie Winkleman, who played Kelly Westwood in the Big Finish audio stories The Eight Truths and Worldwide Web.