Today sees the final stage of the Tour of Britain cycling race - and champion cyclist Sir Bradley Wiggins is in the lead to take the title.
The race will start and finish on Whitehall, passing world-famous sights such as the Tower of London, Big Ben and the Houses of Parliament.
Fellow Briton Mark Cavendish is also in a strong position, having come top in yesterday's leg of the race through Guildford.
The race will get underway at 3.30 this afternoon.
Mark Cavendish won a sprint finish from Italian Elia Viviani on Guildford high street today in the penultimate stage of the Tour of Britain.
The British national champion kicked for the line early and looked as though he might pay the price as Viviani burst forward from fourth place.
But a second push from Cavendish earned him the victory after a 155km run from the racecourse at Epsom.
Sir Bradley Wiggins is still in the overall lead going into Sunday's final stage though. The last leg runs through central London - and is expected to end in a sprint finish again.
Team Sky's bikes are waiting for their riders ahead of the final stage of Tour of Britain. Crowds in Reigate are excited about the arrival of Mark Cavendish.