There have been 209 arrests made so far today, 25 July aspart of the Metropolitan Police Service's major crackdown on thieves.
109 stolen mobile phone handsets have been recovered.
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George Michael died in December last year at the age of 53.
PC Keith Palmer, 48, stabbed by Khalid Masood while on duty in the grounds of the Palace of Westminster last Wednesday.
Those gathered on the bridge fell silent at 2.40pm - the time the first call was made to police exactly seven days ago.