London Set For Tour De France
London will welcome a million visitors when it hosts the prologue and opening day of the Tour de France this weekend.
Some 189 riders will compete in a 7.9km time trial on Saturday as the famous race makes its third visit to Britain.
The winner will wear the leader's yellow jersey as the peloton rides 203km to Canterbury in Kent on Sunday.
Mayor Ken Livingstone said the tour's Grand Depart is "the biggest sporting event hosted by London ahead of the 2012 Olympics".
The Tour then crosses to Belgium before moving into France, with the race ending in Paris on 29 July.
The 3,570km route features 20 stages, with six days in the mountains, including three mountain-top finishes and two time trials.
The Tour, which has started in a host of different countries in recent years, made its debut in Britain in Plymouth in 1974 and returned to Dover, Brighton and Portsmouth in 1994.