Sue Holderness is a British actress best known for her role as Marlene in the popular television series Only Fools and Horses. Born on May 1, 1949, in London, she has had a successful career in both television and theatre, showcasing her talent in various productions. In addition to her work on Only Fools and Horses, Holderness has appeared in other TV shows and films, including The Green Green Grass, a spin-off of the original series. She has also performed in stage plays, demonstrating her versatility as an actress throughout her career.