After Cambridge Ravens became a radio comedy producer. Her first television role was in the ITV series, 'Just Amazing'. She joined Jasper Carrott's comedy, Carrott's Lib, in 1983. In 1986, she played the heavily pregnant Vanessa Plowright in the "Tourists" episode of Farrington of the F.O.. In 1986 she accompanied then husband Steve Brown on the Capital Radio satirical show Brunch, along with DJs Paul Burnett, Roger Scott and comedians Angus Deayton and Jeremy Pascall. In 1994, she spent a year with the RSC. She has done much voice-over work, being the Cadbury's Caramel bunny for several years, and was the seductive voice of a can of apple Tango. She has also appeared on Just A Minute and I'm Sorry I Haven't a Clue on Radio 4, Whose Line Is It Anyway?, Have I Got News for You, No Frills, Alexei Sayle's Stuff and in Dictionary Corner on Channel 4's Countdown. She was producer of the Radio 4 comedy Elephants to Catch Eels.
Ravens appeared in a series-three episode,, of David Renwick's series One Foot in the Grave as Pat Aylesbury, one of the neighbours to whom Meldrew turns after being burgled. From 1996 till 2001 she played Janet Grimley, the mother in The Grimleys, a nostalgic sitcom set in '70s Dudley. In autumn 2006, Ravens appeared on the BBC entertainment programme Strictly Come Dancing partnered with Anton du Beke. She was eliminated in the fifth week. In spring 2007, she appeared on the BBC's The Truth About Food, exploring how foods affect behaviour. Also in 2007, she appeared in Ronni Ancona's comedy sketch show, Ronni Ancona & Co. She won the edition of Celebrity Mastermind on 1 January 2008, the first woman to win. She appeared as Effy's art teacher in E4 drama Skins. In February 2010 and November 2017, she was a panellist on QI, and in 2012 appeared as Susan in the sitcom Hebburn.
Personal life
Ravens's first husband was Steve Brown but the couple divorced in 1993 and she married the vice-president of Universal Music Group, Max Hole, in July 1999 in Richmond upon Thames. She lives in Barnes. She has three sons: Alfie and Lenny by her first husband, born in April 1987 and January 1991, and Louis by her second, born in June 1998. She is an ambassador for the charity ActionAid and has visited Kenya with the organisation and raised money for it on Celebrity Mastermind.