Boris Johnson has waded into the debate about cycling deaths - calling for headphones to be banned. Boris Johnson said those who ride while listening to music were an 'absolute scourge'. But it's not yet clear whether the Mayor actually has the power to enforce a ban, as Luke Farrington reports.
More top news
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.