Nula Conwell (born 24 May 1959) is an English character actress. She appeared as Nurse Kathleen in David Lynch's 1980 Oscar nominated film The Elephant Man, and is well known for playing W.P.C/W.D.C. Viv Martella in the long-running crime UK series The Bill from 1984 to 1993, until her character was killed off. She had roles in Telford's Change and Bloody Kids, and also played the barmaid Maureen in the acclaimed and award-winning British comedy series Only Fools and Horses which starred David Jason. She was asked to appear in the 1985 Christmas special To Hull and Back, but was unable to continue appearing in the sitcom when The Bill producers would not release her to their rival channel.