 He joined London Wasps from Newcastle Falcons in the summer of 2006, and he played a large part in his team's first win, against the Saracens.Walder signed a one-year deal to play for Air New Zealand Cup side North Harbour, but was unable to go through with the move due to injury.Whilst at Newcastle he played in the final of the 2001 Tetley's Bitter Cup, scoring the winning try against Harlequins.