올리비에 어워드 여우주연상을 수상한 영국 여배우이다.
그녀는 채널 4 TV 코미디 프로그램 <Black Books>와 <Green Wing>으로 잘 알려진 배우이다. BBC 드라마 <Love Soup>와 BBC 라디오 4의 연속극 <The Archers>에 출연하였다.
그레이그는 영국 런던, 캠든에서 스코틀랜드와 유태인의 가정에서 태어났고, 버밍험 대학에서 연기를 전공하였고, TV 드라마, 영화 등에 출연하고 있으며, 2006년부터는 연극무대에도 꾸준히 서고 있다.

Film <Tamara Drewe, 2011> Actress
<Going Postal, 2010> Actress(Miss Cripslock)
<Emma, 2009> Actress(Miss Bates)
<Cuckoo, 2009> Actress(Simon)
<The Diary of Anne Frank, 2009> Actress(Edith Frank)
<Love Soup, 2005-2008> Actress(Alice Chenery)
<Captain Eager and the Mark of Voth, 2008> Actress(Jenny)
<Green Wing, 2004-2006> Actress(Dr. Caroline Todd)
<The Secret Policeman's Ball, 2006> Actress(Dr. Caroline Todd)
<Doctor Who, 2005> Actress(Nurse)
<When I'm Sixty-Four, 2004> Actress(Denny)
<The Lenny Henry Show, 2004> Actress
<Black Books, 2000-2004> Actress(Fran)
<Shaun of the Dead, 2004> Actress(Maggie)
<Cheese Makes You Dream, 2003> Actress(Charlotte)
<Jonathan Creek, 2003> Actress(Pam)
<Ready When You Are Mr. McGill, 2003> Actress(Lianne)
<Falling Apart, 2002> Actress(Jackie)
<Pure, 2002) Actress(Liaison Officer)
<Miranda, 2002) Actress(Receptionist)
<World of Pub, 2001> Actress(Julia Robbins)
<People Like Us, 1999-2001> Actress(Jenny)
<Happiness, 20001> Actress(Emma)
<High Stakes, 2001> Actress(Delphina)
<So This Is Romance?, 1997> Actress(Carmen)
<Blind Men, 1997> Actress(Valerie Marsden)
<This Is the Sea, 1997> Voice
<Wycliffe, 1997> Actress(Dr. Hinkley)
<Faith in the Future, 1996> Actress(Emma)
<Neverwhere, 1996> Actress(Lamia)
<Blue Heaven, 1994> Actress(Prof. Wiseman)

2006-2007 Much Ado About Nothing, Actress 올리비에 여우주연상 수상