You might like try Routen Chaplin Specialist Vehicle Insurance Department.
Ask for Kim Eaton on 0115 9737307 Mention Nigel at Peckleton gave you the number if you wish.
£301.72 agreed valve /buy back option/37k value/3k mileage/250 compulsory excess/track events and shows included but no speed trail etc.
Give them a try it will only cost a phone call to start with.
Best of look choosing.Nigel.