Amelia Warner (born 4 June 1982) is an English musician, composer, and former actress. Previously appearing mainly in film and television, Warner is now a signed as an artist to Island Records and performs under the name Slow Moving Millie.

 Warner was born Amelia Catherine Bennett in Liverpool, the only child of actors Annette Ekblom and Alun Lewis. Her paternal uncle is actor Hywel Bennett. When her parents divorced, Warner, then four years old, and her mother moved to London.