Ah ok, from what I gather from the BMST rules you don't actually need a license but I'll get the basic UK one anyway.
Looking at the records it seems there is no P-CF record for the 100cc, does that mean it's an open record? Could go for that too I guess, the rules state "Fuel class motorcycles shall have a positive fuel shut-off activated without the riders hand leaving the handlebars." Anyone know how to achieve this? Can I simply run the fuel line to the handlebars and have a switch there, bleed the fuel through?