Millicent was aged 12 when she enrolled in the Italia Conti Stage School, where fellow pupils included Anthony Newley and Johnny Briggs. One of the first shows she was in was Blue For a Boy. A while later she spent three years on Broadway in The Boy Friend, in which she played every female part during the run. She then played the lead in the show during its London West End run. She joined the television show That Was The Week That Was in 1963 and was in it for about one-and-a-half years, which led to her own show Mainly Millicent. In 1964 she was in the film Nothing But The Best. Later she received two Tony Award nominations for work on Broadway: Side by Side by Sondheim (1977) and King of Hearts (1978).
She married singer Ronnie Carroll in 1959; they divorced in 1965. She then married actor Norman Eshley in 1969, divorcing in 1973. Her third marriage was to Marc Alexander in 1978.
Grace and Frankie(2015)as Joan-Margaret
Code Black(2015)as Marjorie
Adventures of Old Man(2017)as Lucille
The Last Word(2017)as Margaret Dumont
2 Broke Girls(2011)as Gertrude
Show Tunes at the BBC: Volume 3(2026)
Show Tunes at the BBC: Volume 2(2025)
Mrs Palfrey at the Claremont(2005)
Every Home Should Have One(1970)
The Hollywood Moment at Home Edition(2020)as Self
Morecambe & Wise in America(2018)as Self
Betty White: First Lady of Television(2018)as Self
The Queen Mary: Greatest Ocean Liner(2016)as Self - Actress
Saucy! - Secrets of the British Sex Comedy(2025)as Billie Bennett
Saucy!: Secrets of the British Sex Comedy(2024)as Billie Bennett
How the BBC Began(2022)as Self
