Famous for: Playing beleaguered mum Karen Marsden in Cold Feet
"I never thought I'd end up playing a government agent when I left Cold Feet," admits Essex-born Hermione, who worked on the comedy series during its whole run from 1997-2003. Now an MI5 agent in hit spy series Spooks, she had some policing practice in between as Detective Carol Jordan in Wire In The Blood. Named after Helen of Troy's daughter by her dad, she initially trained as a dancer before moving into acting - working as a double glazing salesperson before getting her big break. She and her husband Simon Wheeler, whom she married in the Tower of London in December 2002, have a son, Wilf, born in 2004.