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Mounted Police make their way up Whitehall prior to the funeral service

Margaret Thatcher funeral: In Pictures

The first spectators around Downing Street for the funeral of Baroness

Thatcher arrived today as early as 6.30am. Thousands of police officers

were taking to the streets today amid

heightened security for Baroness Thatcher's funeral following the bomb

attacks in Boston. Here is a taste of what it's like out on the streets

of London today.