Thousands of naked cyclists took to the streets of London on Saturday in the country's largest ever nude protest.

With some completely nude, and others wearing pants to - at least partly - preserve their modesty, the cyclists rang bells as they were cheered on by spectators who lined the streets, many having seen more than they bargained for on a shopping trip to the West End.

The protesters were calling for better protection for cyclists in the capital, including the introduction of more cycle-only areas and safer cycle lanes, and against the use of vehicles that use fossil fuels.

Starting from five points throughout London, the cyclists converged in central London before finishing at Wellington Arch, Hyde Park corner.

There were also naked bike rides in Brighton, Manchester, York and Hastings.