Bonita Melody Lysette "Bonnie" Langford (born 22 July 1964), is an English actress, dancer and entertainer. She came to prominence as a child star in the early 1970s before subsequently becoming well known for her role as Mel Bush, a companion of Colin Baker and Sylvester McCoy's Doctor in the BBC series Doctor Who in the mid 1980s. She has since appeared on stage in various musicals in the West End and on Broadway, shows such as Peter Pan: The Musical, Cats, The Pirates of Penzance and Chicago and more recently on TV in series 1 (2006) & series 9 (2014) of the reality competition programme Dancing on Ice .