LONDON, ENGLAND - APRIL 17: Sarah Ferguson, Duchess of York attends the Ceremonial funeral of former British Prime Minister Baroness Thatcher at St Paul's Cathedral on April 17, 2013 in London, England. Dignitaries from around the world today join Queen Elizabeth II and Prince Philip, Duke of Edinburgh as the United Kingdom pays tribute to former Prime Minister Baroness Thatcher during a Ceremonial funeral with military honours at St Paul's Cathedral. Lady Thatcher, who died last week, was the first British female Prime Minister and served from 1979 to 1990. (Photo by Christopher Furlong/Getty Images) *** Local Caption *** 166789256.jpg
The funeral cortege passes along London's Fleet Street towards the cathedral. Peter Macdiarmid / Getty Images
Mourners observe the coffin, carried on a horse drawn gun carriage through the streets of London. Peter Macdiarmid / Getty Images
Police spotters watch as crowds gather to watch Margaret Thatcher's funeral. Matt Cardy / Getty Images)
A man covers his face, centre, as crowds gather to watch the procession. Matt Cardy / Getty Images
Queen Elizabeth II and Prince Philip, Duke of Edinburgh attend the ceremonial funeral of the former British Prime Minister. Oli Scarff / Getty Images
British Prime Minister David Cameron gives a reading during the funeral inside St Paul's Cathedral. Christopher Furlong / Getty Images
Protesters also lined the funeral procession. Clive Rose / Getty Images
Police react before the cortege passes along Fleet Street towards St Paul's Cathedral. Michael Regan / Getty Images
Queen Elizabeth II leaves the ceremonial funeral. Dan Kitwood / Getty Images
Former prime minister Tony Blair and his wife Cherie Blair leave the service. Chris Jackson / Getty Images
Members of the UK armed forces carry the coffin after the Ceremonial funeral of former British Prime Minister Baroness Thatcher at St Paul's Cathedral. Christopher Furlong / Getty Images
Guests take their seats ahead of the service. AFP Photo
Carol Thatcher looks across at brother Mark as they attend the ceremonial funeral of his mother, British former prime minister Margaret Thatcher. AFP
A Union flag draped coffin bearing the body of former British Prime Minister Margaret Thatcher is carried on a gun carriage drawn by the King's Troop Royal Artillery during her ceremonial funeral procession in London, Wednesday, April 17, 2013. The Iron Lady is being laid to rest - yet even in death, she remains a divisive figure. World leaders and dignitaries from 170 countries are to attend the funeral of former British Prime Minister Margaret Thatcher on Wednesday, an elaborate affair with full military honors that will culminate with a service at St. Paul's Cathedral in London. (AP Photo/Matt Dunham, Pool) *** Local Caption *** Britain Thatcher Funeral.JPEG-09202.jpg
The coffin containing the body of former British Prime Minister Margaret Thatcher arrives for the ceremonial funeral at St Paul's Cathedral in London, Wednesday April 17, 2013. World leaders and dignitaries from 170 countries are due to attend the funeral of former British Prime Minister Margaret Thatcher on Wednesday, an elaborate affair with full military honors that will culminate in a service at St. Paul's Cathedral in London. (AP Photo/Stefan Wermuth, Pool) *** Local Caption *** Britain Thatcher Funeral.JPEG-0e2af.jpg
A man gets a view of the funeral on a balcony in London. Paul Hackett / Reuters