Background
Born in Hammersmith, London, Rooper is the daughter of television journalist Alison Rooper.
Born in Hammersmith, London, Rooper is the daughter of television journalist Alison Rooper.
She attended Redcliffe Primary School in Chelsea and the Godolphin and Latymer School.
While working on The Famous Five, she passed eight GCSEs with A* and A grades. From there she went to MPW sixth form college where she got three A-grade A levels. Rooper bought her first home at the age of 19.
Rooper expressed a wish to be an actress at the age of nine and contacted an agent.
Her first professional roles were in the 1993 film The Higher Mortals and the 1994 film Willie"s War. In 1996, she appeared in all episodes as George in Enid Blyton"s The Famous Five.
She said: After several small roles in British television series, Jemima took the role of Nicki in the popular Channel 4 teenage series As If, which successfully ran for three years. Her next appearance was in the supernatural drama Hex where she played a lovable lesbian ghost named Thelma.
Hex aired on Sky One and ran for two series between 2004 and 2005.
Rooper made her Hollywood debut in The Black Dahlia. In 2008 she starred in the television series Lost in Austen and guest starred in Agatha Christie"s Poirot. She also played a lead role in Her Naked Skin, a new play at the National.
In December 2010, Rooper was cast in the musical Maine and My Girl at Sheffield"s Crucible, alongside Miriam Margolyes.
Rooper was seen on-stage in One Manitoba, Two Guvnors, which was favourably reviewed. She has since appeared in Blithe Spirit and Breeders in the West End.
Her next project is the British horror-comedy Hotel Caledonia. Where Do We Live - Royal Court, Jerwood Upstairs, May 2002 (playing Lily) Us and Them - Hampstead, June 2003 (playing Izzie) Her Naked Skin - National, July 2008 (playing Eve Douglas) The Great Game: Afghanistan - Tricycle, April - June 2009 The Power of Yes - National October 2009 All My Sons - Apollo, May - October 2010 (playing Ann Deever) One Manitoba, Two GuvnorsNational June 2011 (playing Rachel Crabbe) Blithe Spirit - Gielgud, March 2014 (playing Elvira) Breeders by Ben Ockrent - Street James, September 2014 Hand to God - Vaudeville, London, February 2016.