Kent Kings have dropped Great Britain Youth rider Luke Harris.

Kings weren't satisfied with the 15-year-old's progress and have replaced him with Jason Garrad.

Oxfordshire rider Garrad graduated to speedway from motocross and has competed for Rye House Raiders in the Midland Development League.

Kings boss John Sampford said: "We have been concerned that despite Luke Harris’ undoubted talent and potential, insufficient direct progress has been made in the dozen or so matches he’s ridden in the Kings side and feel it’s best that he is given a spell away from the pressure of having to contribute in the No.6 race jacket.

"We wish Luke well in his racing and especially in his pursuit of the GB Youth title where he’s next in action at the weekend up at Northside.

“The National League is all about giving riders who show potential a chance to step up to the mark and progress and we feel from what we’ve seen at close quarters of Jason Garrad that he has that potential and a steely determination to succeed.

"We know he’s coming in for what will be his senior competitive debut, in a highly pressurised and very important match on Monday (v Stoke in the Knockout Cup quarter-finals) but it’s a big challenge we feel both Jason and the club can benefit from.”