Traffic was banned from several roads in central London for the day to make way for thousands of cyclists taking part in a mass bike ride.
Cyclists could do as many circuits as they wished
More than 30,000 people rode along a 14km (8.7 mile) car-free route past iconic landmarks in the city.
Cyclists could use several entry points to access the route, which had no start and finish point, and could cycle round as many times as they wished.
The London Freewheel route was open from 1100 BST until 1600 BST on Sunday.
It passed several London landmarks including the London Eye, Victoria Embankment, Westminster, St Paul's Cathedral and the Mall.
Riders were led onto the route by experienced cyclists from six "hubs" across the capital. Participants could also have their bikes checked by experts.
The Hovis London Freewheel event culminated in a festival at St James's Park for riders, including bike stunt displays, a cycling circus and information on cycling in London.
The number of cyclists on London's major roads is estimated to have grown by about 80% over the past seven years, but Transport for London wants to increase it further.