Streep 'went to jail' in own home to study Thatcher

Meryl Streep shut herself away in her house for a week in order to prepare for playing Margaret Thatcher.

Although director Phyllida Lloyd had initially planned for the Academy Award-winning actress to have two weeks of rehearsals in London before she began filming ‘The Iron Lady’ which portrays Britain’s former Prime Minister, Streep asked for a week alone where she could cram in as much information about the formidable politician as possible.