BornonMay22,1949inSt.Albans,Hertfordshire,CampbellstudiedactingattheLondonAcademyofMusicandDramaticArt,thenwentontodoherapprenticeshipinrepertorytheater,includingthefamousBirminghamRep.ShebecameamemberoftheRoyalShakespeareCompany;itwasfortheRSCthatsheplayedNora.CampbellalsohasbeenamemberoftheRoyalNationalTheatre.