Square revellers celebrate wedding
London Mayor Boris Johnson toasted the royal newlyweds as thousands celebrated in Trafalgar Square.
Security staff estimated that more than 10,000 revellers gathered in the square to watch proceedings on giant screens.
Mr Johnson joined the crowds after the service and raised a glass to William and Kate's health from a stage.
Revellers waved souvenir flags as the wedding reached its closing stages, turning the square into a sea of colour. Most then stayed on to continue celebrating late into the day.
The square was blocked off shortly before the service began after security staff decided it had filled to capacity. Thousands unable to get in tried to catch a glimpse of the screens from behind barriers set up around the edge.
Revellers had been searched by security guards as they passed through barriers to enter the square. Many said they had given up hope of finding a place on the procession route.
Signs asked revellers not to bring "glass, barbecues, tables, chairs, gazebos or tents" into the square. But onlookers were able to buy sandwiches from a Marks & Spencer tent. "Posh" fish and chips, priced £7, and £5 cheeseburgers were also on offer at food stalls.
Another stall was offering souvenir £10 scarves, £3 flags and £5 cowboy hats.
Long queues built up for portable toilets set up on the edge of the square. One nearby cafe tried to cash in with a sign advertising food and "lovely loos".
The first cheer of the day came when former Manchester United and England footballer David Beckham and his wife, Victoria, appeared on screen.