She is best known for her roles as Fliss in Not Going Out and Julie Johnston in Bad Girls, Doc Newton in Red Dwarf and Hazel Hobbs in EastEnders.
Mirylees played Angela Snow in The Darling Buds of May, Flora McInnes in Strathblair, and Doc Newton in Red Dwarf.
Her guest roles include Zola Zbzewski in Jonathan Creek, Sylvana Watson in Taggart, Maria Huntly in The Bill, and Barbara Wells in Casualty.
On 5 January 2007, it was announced on GMTV that Mirylees had joined EastEnders as Hazel Hobbs, the mother of Garry.
[4] In March 2020, she appeared in an episode of the BBC soap opera Doctors as Isa Auld.