Biography: Lee MacDonald will forever be remembered for the role of troubled, drug addicted student Zammo McGuire in the children's TV series Grange Hill from 1982 to 1987. The hit single Just Say No, an anti-drugs song, was based on his character's storyline. Since leaving Grange Hill, MacDonald has semi-retired from acting, running a key-cutting and locksmith company in South London however he still appears on various celebrity reality TV shows and, as of April 2019, it was announced he will be guest starring in EastEnders.