Jenny Agutter
From Tardis Wiki, the free Doctor Who reference
Jenny Agutter (born either 19 December[1] or 20 December 1952[2] at Musgrove Park Hospital in Somerset[3]) voiced Sekhmet in the Big Finish Doctor Who audio story The Bride of Peladon.
She also appeared in the charity specials One Born Every Minute and Looking for Pudsey as her Call the Midwife character, Sister Julienne.