Background
Blakiston was born in London and attended RADA.
Blakiston was born in London and attended RADA.
Royal Academy of Dramatic Artist
Early In the 1960s she appeared in three episodes of The Avengers as well a number of International Trade Commission productions such as The Saint and the 1969 Randall and Hopkirk (Deceased) episode "Never Trust a Ghost". She appeared to great acclaim as Marjorie Ferrar in the British Broadcasting Corporation adaptation of Galsworthy"s The Forsyte Saga in 1967. In 1977 she appeared in Raffles as Lady Paulton, and also in Murder Most English as Helen Carobleat.
In 1983, Blakiston was seen to revel in the wayward character of Lady Patience Hardacre in the satirical Granada television series Brass, which ran for three series.
In 1986 Blakiston played the villain Bess Sedgwick, opposite Joan Hickson"s Mission Marple, in "At Bertram"s Hotel", made by the British Broadcasting Corporation and shown on the Public Broadcasting Service series Mystery in the United States. She also appeared as Lionel Hardcastle"s ex-wife in an episode of As Time Goes By. She and Geoffrey Palmer (Lionel) had previously played estranged spouses a decade earlier in Carla Lane"s series The Last Song.
Currently to be seen in the new British Broadcasting Corporation adaptation of Poldark as Aunt Agatha.