Kerron Clement, the American 400-metre hurdles silver medallist in Beijing, was left fuming as the bus transporting him from Heathrow Airport to the Athletes' Village was 'lost' for four hours.

Clement took to Twitter to reveal his less than favourable first impression of London on Monday morning as his coach struggled to locate its final destination, amid chaotic scenes in the captial as Games Lanes were activated and Heathrow Airport was expected to handle a record-breaking 236,955 passengers.

The American, among hundreds of athletes from across the world arriving in the capital this morning ahead of the Games, claimed the bus had been lost for four hours.

Clement wrote on Twitter: "Um, so we've been lost on the road for 4hrs. Not a good first impression London.

"Athletes are sleepy, hungry and need to pee. Could we get to the Olympic Village please."

The 26-year-old American, a two-time world champion, will be a major rival to Team GB's Dai Greene during the Olympics.

The hurdler won the world title in 2007 and 2009 before surrendering the crown to Greene in Daegu last year.

A media shuttle bus also had difficulty finding its destination. The double decker, travelling from Russell Square to the Olympic Park in Stratford, pulled over 30 minutes into its journey.

The driver said: "Sorry about this."

He then got out a map, before performing a U-turn and quickly getting back on the correct route.
-Telegraph Sport