Geraldine Cowper (born 23 June 1958) is an English actress who is best known for playing Rowan Morrison in the 1973 horror film The Wicker Man and Rosie Miller in EastEnders. In the mid-1980s she took the part of Clare France in After Henry on BBC radio and also appeared on television as Jim Hacker's daughter in Yes Minister. Career Cowper was Clare France, the youngest of the female triumvirate in the BBC Radio 4 comedy After Henry, which also starred Prunella Scales and Joan Sanderson. Whilst Scales and Sanderson reprised their roles in the later television version, Cowper was considered too old to play a teenager on screen and the role went to Janine Wood. Cowper also played Lucy Hacker, the daughter of Jim Hacker, in the BBC comedy series Yes Minister, although only in one episode. She featured in two episodes of Only Fools and Horses – "Tea for Three" and "The Frog's Legacy" – as Trigger's niece Lisa, and also appeared in Bachelor Father. In her early teens, Cowper made an uncredited appearance in Alfred Hitchcock's Frenzy (1972) and played Rowan Morrison in the horror film The Wicker Man (1973). Just as David Spinx, her on-screen EastEnders partner, had small roles in the series prior to playing Keith Miller, Cowper had briefly played Lindsay, the mother of a schizophrenic youth named Matt, in April 2002. She appeared in an episode of Law & Order: UK in 2014 as Hope Corday. TV and filmography Law & Order: UK ... Hope Corday; 2014, ITV EastEnders ... Rosie Miller; 2004–2006, BBC One Casualty ... Eileen Price in "Feuds and Fury"; 14 December 2002, BBC One EastEnders ... Matt Lindsay's Mother (Anne Lindsay) in two episodes; 23–25 April 2002, BBC One The Bill ... Jane Foster in "Meltdown: Part 1"; 6 March 2000, ITV Trial & Retribution ... Ann Taylor; 19 October 1997 The Bill ... D.I.O. in "Repossession"; 6 September 1996, ITV The Bill ... Lorraine Dent in "Partners"; 23 August 1994, ITV The Bill ... May Kilby in "Desperate Remedies"; 31 August 1993, ITV The Bill ... Brenda Knight in "Blue for a Boy"; 6 October 1988, ITV Only Fools and Horses ... Lisa in "The Frog's Legacy"; 25 December 1987, BBC1 Only Fools and Horses ... Lisa in "Tea for Three"; 21 September 1986, BBC1 The Return of the Soldier (1982) ... Ward Nurse S.W.A.L.K. ... Katherine; 1982–1984,