Thatcher's funeral is being held in London today.
A massive security operation is underway by Scotland Yard on the streets of London as Thatcher's coffin will soon be carried to St Paul's Cathedral. After Thatcher's coffin reaches St Paul's, it will be carried up the steps of the cathedral to be met by over 2,000 dignitaries, friends, ex-colleagues and family members.
The Queen and her husband, the Duke of Edinburgh, will be among those attending the funeral. It will be the first time a British monarch has been present at the funeral of a British prime minister since the death of Sir Winston Churchill in 1965.
Some 4,000 police will be deployed in central London amid heightened security concerns in the wake of the Boston Marathon bombings this week. While no official estimates for the cost of the funeral have been released, several media reports suggested that the total expense could surpass the $15 million mark.
The Iron Lady died from a stroke on April 8, at 87.