An artist's impression of Lee Valley White Water Centre as it might look during the London 2012 Canoe Slalom competition. The temporary seating has been designed to bring spectators as close as possible to the water course to maximise both viewing and athlete experience. Image credit: Image credit: LOCOG / eyevine

Members of Team GB paddle at the Lee Valley White Water Centre in Waltham Cross, Hertfordshire on January 18, 2012, the venue for the canoe slalom event during the London 2012 Olympic games. AFP PHOTO / LEON NEAL

Team GB athletes train at the Lee Valley White Water Centre in Waltham Cross, Hertfordshire on January 18, 2012, the venue for the canoe slalo event during the London 2012 Olympic games. AFP PHOTO / LEON NEAL

Team GB athletes train at the Lee Valley White Water Centre in Waltham Cross, Hertfordshire on January 18, 2012, the venue for the canoe slalom event during the London 2012 Olympic games. AFP PHOTO / LEON NEAL

Two members of Team GB paddle at the Lee Valley White Water Centre in Waltham Cross, Hertfordshire on January 18, 2012, the venue for the canoe slalom event during the London 2012 Olympic games. AFP PHOTO / LEON NEAL

An employee of the centre kayaks at the Lee Valley White Water Centre in Waltham Cross, Hertfordshire on January 18, 2012, the venue for the canoe slalom event during the London 2012 Olympic games. AFP PHOTO / LEON NEAL

Members of Team GB paddle at the Lee Valley White Water Centre in Waltham Cross, Hertfordshire on January 18, 2012, the venue for canoe slalom event during the London 2012 Olympic games. AFP PHOTO / LEON NEAL

In a picture taken on January 18, 2012 British paddler Adam Marshall trains at the Lee Valley White Water Centre, the venue for the canoe slalom event at the London 2012 Olympic games, in Waltham Cross, Hertfordshire. AFP PHOTO / LEON NEAL

canoeists practice at Lee Valley White Water Centre, the London 2012 Canoe Slalom venue. Image credit: LOCOG / eyevine

General View during the C2 canoe double Slalom at Lee Valley White Water Centre. The event was part of the "London Prepares" series, to test arrangements for the Olympic event next year. Image credit: LOCOG / eyevine