Up to a million well-wishers flocked to central London today to catch a glimpse of the historic royal wedding, police said.
Scotland Yard said that there were about 500,000 people around Buckingham Palace to watch William and Kate's eagerly-anticipated kiss.
The force estimated that crowds would have peaked at about one million along the processional route.
In a unprecedented covert and overt operation, only 45 people have been arrested so far.
Crowds around Buckingham Palace were bigger than police had predicted.
A Scotland Yard spokesman said the mood on the ground was "fantastic".
He added: "The crowd has been tremendous, the mood fantastic. People have been coming forward to help police officers."Reuse content