LONDON (Reuters) -Actor Glenda Jackson, a two-time Oscar winner who later served as a socialist politician in the British parliament for 23 years, has died after a brief illness, PA Media reported on Thursday, citing her agent. She was 87.

One of four daughters of a bricklayer and a cleaning lady in northwest England, Jackson never forgot her roots even as she made her name as one of the greatest women actors of her generation.

Raw-boned, pallid and angular, with striking, sharp eyes, she had starred on stage, television and film before quitting to take up politics, declaring: "“An actor's life is not interesting".

Growing up in Birkenhead, Cheshire, Jackson left school at the age of 15 and found work in a shop before winning a place at the prestigious Royal Academy of Dramatic Art in London.

She won her first Academy Award in 1971 as lead actress for her role as a headstrong artist in director Ken Russell's film of D.H. Lawrence's novel "Women in Love".

Her second Oscar came three years later for "“A Touch of Class", a romantic comedy directed by Melvin Frank in which Jackson played a harried fashion designer caught up in a catastrophic love affair with an American businessman in London.

After more than three decades on stage and film, Jackson quit acting and took her no-nonsense, straight-talking style into politics.

She had been angered by the damage she believed was inflicted on the working classes by Margaret Thatcher, Britain's Conservative prime minister from 1979 until 1990.

In 1992, at the age of 55, Jackson won a seat in parliament representing the left-of-centre Labour Party in a constituency in north London.

"“We must work for the poor, the homeless, the unemployed, the frail, the sick," she told supporters.

Jackson was married from 1958 to 1976 to stage director Roy Hodges. She is survived by their son, Daniel Hodges, who was born in 1969.

(Reporting by Elizabeth Piper, Muvija M and Kylie MacLellan; editing by Michael Holden and Angus MacSwan)