Reigning Bennetts British Superbike Champion Tarran Mackenzie has been ruled unfit to take part in this weekend's Oulton Park action.

The McAMS Yamaha rider underwent a full assessment by Series Chief Medical Officer Dr Heike Romer and it was concluded that Mackenzie was not fit to participate this weekend and he agreed with the decision.

“I knew it was always going to be a long shot to ride here this weekend as Oulton Park is a really physical circuit, and although I have been working hard on my recovery, we are not quite there yet. I am now looking forward to continuing my rehab and to coming back stronger at Donington Park," said Mackenzie.