[3] He scored his first podium result at the 2006 Swedish Grand Prix and finished the season ranked eighth in the MX2 World Championship final overall standings.
However, he won the Grand Prixs of Bulgaria, France, the Czech Republic and Citta di Faenza, and also scored podium finishes in Portugal, Italy, Great Britain, South Africa, Ireland and Benelux.
Pit Beirer, director of off-road racing at KTM, said of Searle 'His riding and rate of progression make him an excellent member of our MX2 team and we are now excited for his future achievements in the US'.
Searle finished a strong third overall for the 2011 FIM Motocross World Championship season, behind Redbull Teka KTM riders Ken Roczen and Jeffrey Herlings.
While fast throughout, he was often hindered by poor starts, meaning he would lose time by having to fight his way through the pack in the early laps of a moto, allowing the leaders - usually Roczen and Herlings - to pull away.
In his final season in the MX-GP2 class, Searle once again finished runner-up in the championship standings, this time to Red Bull KTM Factory Racing Team rider Jeffrey Herlings.
He signed to compete in the 2020 British Motocross National Championship for the Buildbase Honda team managed by former world champion David Thorpe.