Walsh put in an impressive performance to win bronze
Great Britain's performances at the canoeing World Championships in Brazil have secured the team three boats at the 2008 Olympics in Beijing.
A nation is allowed one boat in each class and Campbell Walsh's third in the Men's K1 (kayak single) earned him a bronze medal and a boat in Beijing.
Fiona Pennie finished seventh in the Women's K1 class to book another spot.
And David Florence was fifth in the C1 (canoe single) class to also ensure another boat for GB at the Olympics.
Walsh achieved third despite a two-second penalty after touching a gate, while Nottingham's Richard Hounslow came fourth.