Born in Manchester in 1970, Caroline changed her name from Caplan to Catz to avoid clashing with an existing actor with the same name. She attended RADA, graduated in 1991, and has two children with her husband, actor Michael Higgs.
Caroline has starred in a diverse range
Caroline starred with Hamish Clark, Sue Devaney, Gary McDonald and Jessie Wallace in Haunted at the Arts Theatre London, in May 2008.
Caroline starred in a series of adverts in the UK in the 1990s for Cadbury's Milk Tray.
Caroline graduated from RADA (Royal Academy of Dramatic Art) in 1991.
Plays in a folk band called Sapphire.
She has a son named Sonny (b. 2001) and daughter Honour (b. 2006) with actor partner Michael Higgs. They net on the set of the TV programme The Bill (1984).
She changed her birth Surname from Caplan to Catz as there was already an actress with that name. She came up with the last name after seeing a doodle of a cat but ironically she is extremely allergic to cats.
(on researching her role in "The Vice" in Soho)
Caroline: I was so naive, I couldn't believe the things I saw. Some of those sex aids - I certainly wouldn't know what to do with them!
(comparing herself to her character in "Murder in Suburbia")
Caroline: There are some elements of me in Kate but in my wildest dreams I could never be like her. I'm really untidy and never throw anything away.
(on Andy, the Costume Designer for "The Vice", paying for a lapdance for her when they went fact-finding at a club)
Caroline: He thought it was hilarious as I sat fiddling with my hair in embarrassment while this dancer took her dress off and waved her chest in front of my face!