£35 I think and there was no minimum needed. Did it last year. And I've entered the off road one in September this year and I think that was the same price.
FNRttC?
Google it.
Unless I'm misunderstanding it, here is a minimum sponsorship requirement of between £100-150 depending which one you enter.
That looks really interesting. There blog says they are taking a break for 2015 though. I'll look forward to next year.
I think there's only a few parts that are officially closed (fairly sure Ditchling is) - the rest the roads are technically open. But xx,000 cyclists seem to deter motorists from using themA lot, but not all, of the roads are closed