London is to host the start of the Tour of Britain cycle race for the first time.

The prologue time trial will see riders embark on a high-speed lap of the Crystal Palace sports centre.

Thousands of spectators are expected to line the route to watch 100 of the world's top cyclists take part in the start of the 590-mile, seven-day race which ends in Glasgow.

The 2007 Tour of Britain will run from 9 to 15 September.

It will be the second major cycling event in the capital this summer - the Tour de France will start in London for the first time, with a prologue on 7 July and the first stage proper the next day.

Mayor Ken Livingstone said: "In the year that London is host to the Tour de France, we are delighted to welcome the first stage of the Tour of Britain.

"This important, national event will further showcase London's ability to promote a world-class sporting fixture to a global audience.

"The Tour of Britain will be a fantastic spectacle and a fun day out. It will help to highlight the health benefits and enjoyment that cycling can offer Londoners and will illustrate the first-rate facilities and experiences that

London has for all visitors." Mick Hickford, head of special projects at TfL, said: "This is a massive year for cycling in the capital.

"We want the Tour of Britain to build on the great success we have had in getting more people to take to two wheels. The day promises to be a spectacular event for everyone - not just cyclists.

"The visit of the Tour de France and the Tour of Britain's first ever prologue will give cycling a huge boost, both as a way of getting around and as a leisure activity."

After the London prologue, the Tour of Britain will continue with six stages: Reading to Southampton (87 miles), Yeovilton to Taunton (106 miles), Worcester to Wolverhampton (93 miles), Rotherham to Bradford (99 miles), Liverpool to Kendal (112 miles) and Dumfries to Glasgow (93 miles).