Career
She is best known for her role as January Hammond, the mistress of Den Watts in EastEnders. She appeared in the programme regularly from 1986 to 1987 and also made brief return appearances in 2002 and 2003, the latter leading up to Den"s return to the show. Other roles include two series of "The Spoils of War ", War and Remembrance, Anno Domini, "Anglo Saxon Attitudes", "The Cazalet Chronicles", "Zoya", "Love in a Cold Climate", another famous mistress, Camilla Parker-Bowles, in the television mini-drama Charles and Diana: Unhappily Ever After (1992).
She has also appeared in The Citadel, Midsomer Murders, "Judge John Deed", "Byron", "Bad Girls", "Love Soup", "Armadillo", "Poirot", "Daniel Deronda", as well as in four series of the sitcom Don"t Wait Up as Helen with Nigel Havers.
Her first television cr was in the 1973 Doctor Who story Planet of the Daleks. Her films include AKA (2002), A Good Woman (2004), The Best Manitoba (2005), Mission Potter (2006) and 1st Night (2010).
In the West End, she has appeared for the R.S.C. in "The Return of A.J.Raffles", as Larita in Noël Coward"s "Easy Virtue" at The Garrick,she was in the original cast of "Don"t Dress for Dinner" at The Apollo, "Home and Beauty"at the Lyric and "Top People" at the Ambassadors Theatre. In 2009, How appeared as a finishing school teacher in a commercial for Go Compare insurance, while in March 2010 she appeared briefly as hospital executive Zara Merrick in the BBC1 drama series Casualty.
In 2014, she is to play the role of Joan Rogerson in Fatal Attraction, at the Theatre Royal Haymarket.