Kennett started his racing career in the Conference League with the Rye House Raiders in 2001. He had his first permanent team place with the Raiders in 2002. The same season he made his Premier League debut for the Rye House Rockets. In 2004, he joined his local club the Eastbourne Eagles in the Elite League. Kennett joined Valsarna speedway, his first team in Sweden 2004. He struggled in his first season and in 2005 he returned to Rye House Rockets in the Premier League.