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. In the 1980s she played Carinna in Lovejoy.
Mirylees has appeared in various roles, including Angela Snow in The Darling Buds of May, Flora McInnes in Strathblair, and Doc Newton in Red Dwarf. Her guest appearances include Zola Zbzewski in Jonathan Creek, Sylvana Watson in Taggart, Maria Huntly in The Bill, and Barbara Wells in Casualty. In the 1980s she played Carinna in Lovejoy.