Baroness Thatcher attends the House of Lords during the State Opening of Parliament in the Palace of Westminster on May 25, 2010 in London.
Former British Prime Minister Margaret Thatcher waves to the press at her home, after leaving Cromwell Hospital on Nov. 1, 2010 in London.
British Prime Minister David Cameron talks to former Prime Minister Baroness Thatcher inside Number 10 Downing Street on June 8, 2010.
Former prime ministers Tony Blair and Baroness Thatcher greet each other at Westminster Hall on Sept. 17, 2010 in London.
Thatcher waits to greet Pope Benedict XVI at Westminster Hall on Sept. 17, 2010 in London.
The Prince of Wales speaks with Baroness Thatcher and Major General Jonathan Shaw (2nd right) during a 2010 reception in London.
Former UK Prime Minister Gordon Brown and his wife Sarah (L) greet Lady Thatcher at Downing Street on Nov. 23, 2009 in London.
Margaret Thatcher (L), US Vice President Dick Cheney (C) and his wife Lynne Cheney (R) participate in a moment of silence on the South Lawn of the White House Sept. 11, 2006.
Baroness Thatcher (R) walks HM Queen Elizabeth II as they arrive for Thatcher's 80th birthday party at the Mandarin Oriental on Oct. 13, 2005 in London.
Maria Shriver, former California Gov. Arnold Schwarzenegger and Margaret Thatcher attend the interment ceremony as former President Ronald Reagan is laid to rest at the Ronald Reagan Presidential Library June 11, 2004 in Simi Valley.
Lady Margaret Thatcher poses for photographers April 3, 2002 with a copy of her new book 'Statecraft' at Hatchards bookshop, Piccadilly in London.
Margaret Thatcher sits as sculptor Neil Simmons works on a marble statue of her in 2002.