Marcia was born on November 26, 1943, and embarked on a journey to hone her craft as an actress by enrolling at London's prestigious Guildhall School of Music and Drama, where she earned her degree in 1963. Following her graduation, she began her professional career by acting in repertory productions throughout the country, initially serving as an assistant stage manager in a production of "David Copperfield" in Salisbury.
As her talent and experience grew, Marcia soon found herself performing on the West End stage, where she received widespread acclaim for her supporting roles. Her impressive performances earned her two Olivier Awards, including one in 1964 for her standout performance in the play "Stepping Out" and another in 2002 for her role in "Humble Boy."
Despite her self-deprecating remarks about her physical appearance, claiming that she "has a funny face" and could never have been a leading lady, Marcia has consistently delighted audiences with her versatile performances in television comedy. Her extensive range has allowed her to take on a variety of roles, from her early work in "No Place Like Home" in 1986 to her more recent appearances in "Vicious" during the 2010s.
In her iconic role as an extremely foul-mouthed old lady, Marcia has stolen the show, captivating audiences with her remarkable talent and wit. Her remarkable career has spanned decades, and she continues to be a beloved figure in the world of entertainment.