Floella Benjamin
From Tardis Wiki, the free Doctor Who reference
Floella Benjamin, Baroness Benjamin (born 23 September 1949https://www.famousbirthdays.com/people/floella-benjamin.html) played Celeste Rivers in The Sarah Jane Adventures episodes The Lost Boy, The Day of the Clown, The Eternity Trap and Sky.
Career
A Liberal Democrat life peer, she became the first British peer to appear in a Doctor Who production. The second was Tim Bentinck, the 12th Earl of Portland.