Claudia Winkleman (in-universe)
From Tardis Wiki, the free Doctor Who reference
Claudia Winkleman was a presenter. She once attempted to seduce the Eleventh Doctor. She did so unsuccessfully. (NOTVALID: Comic Relief 2013) She also attended Sprout Boy's Christmas party and met the Twelfth Doctor. (NOTVALID: Sprout Boy meets a Galaxy of Stars)
behind the scenes
In a skit part of Comic Relief 2013, she tried to seduce Matt Smith (in character as the Eleventh Doctor). Her likeliness also appeared in Sprout Boy.
Her half-sister is Sophie Winkleman, who played Kelly Westwood in the Big Finish audio stories The Eight Truths and Worldwide Web.
