Fellow superbike riders have paid tribute after of two of their colleagues at Oulton Park on Monday. and Shane Richardson, 29, at the British Supersport Championship race.
The crash happened on the exit from turn one, Old Hall corner, on the first lap of the race in Cheshire. Rapid Honda rider Jenner died of a catastrophic head injury at the circuit's medical centre, while Richardson, of the Astro-JJR Hippo Suzuki team, died on the way to Royal Stoke University Hospital from severe chest injuries.
Tom Tunstall, a a 47-year-old rider for SRG Specialist Risk Group Ducati, sustained significant back and abdominal injuries and remains in Royal Stoke University Hospital.
Five riders - Carl Harris, Max Morgan, Cameron Hall, Freddie Barnes and Morgan McLaren-Wood - were involved in the crash and were treated for minor injuries at the track, while three others - Lewis Jones, Corey Tinker and George Edwards - escaped unhurt.
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The race was immediately stopped and the rest of the Bennetts British Superbike Championship . Motorsport Vision Racing (MSVR), who are responsible for circuit operations, and the Motorcycle Racing Control Board are "investigating the full circumstances of the incident in conjunction with the Coroner and Cheshire Constabulary".
The horrific crash has rocked the of motorsport, with a succession of riders taking to to share their condolences.
Rory Skinner posted: "Progressed today but don’t have a lot to say… Gutted is an understatement. The sport can be too cruel at times. Thoughts and condolences to everyone and their families involved in today’s incident."
Jamie Davis wrote: "What a horrible day for racing. My thoughts are with every family and or friends." Blaze Baker added: "Absolutely devastated, very sad day today. My thoughts are with both families in this very tough time."
"Is a black day for motorsport with terrible losses. Ride in peace my friend," Jaimie van Sikkelerus wrote. Storm Stacey posted: "I have nothing to say this evening, forget the results. Thoughts and prayers to the families and friends of the 2 riders that passed today."

A statement from Cheshire Police on Monday read: "Police are investigating two deaths on behalf of the coroner following a multiple collision at Oulton Park this afternoon.
"Emergency services were called to the scene following the collision which resulted in two riders being fatally injured and another with serious injuries."
The Supersport Championship serves as a support series to the main Superbikes event. New Zealander Richardson finished eighth in last year's standings after earning 146 points, while this was Jenner's second year racing in the championship.
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