After eleven years as British Prime Minister, Margaret Thatcher has announced her resignation. Michael O’Sullivan assesses her political career.

Report shows footage of Margaret Thatcher addressing news conference after her election as Conservative leader February 1975.

Office with a portrait of Thatcher on the wall and a bust of former British Prime Minister, Winston Churchill.

Thatcher at a cabinet meeting.

Interview with Thatcher on becoming Prime Minister in 1979.

Thatcher with husband, Denis Thatcher, in front of a painting of Winston Churchill.

Photographs of a young Margaret Thatcher.

Thatcher greeting people in the streets.

Thatcher with Edward Heath.

Footage of news conference in February 1975.

Footage of Conservative conference in October 1980.

Property for sale signs.

March for jobs.

Footage of the 1982 Falklands War.

Margaret Thatcher with French President, Francois Mitterrand, United States President, Ronal Reagan, and Soviet President, Mikhail Gorbachev.

Footage of protests.

Footage of the miners’ strike.

Footage of the arrest of miners' leader, Arthur Scargill.

Thatcher at her desk.

Footage of the signing of the Anglo-Irish Agreement in 1985.

Footage of the poll tax riots.

Cabinet photocall.

Thatcher speaking in the House of Commons.

Graphic showing Margaret Thatcher, Downing Street and the years of her premiership.

The reporter is Michael O'Sullivan.

To reuse or license RTÉ content please contact archivesales@rte.ie