It looks as though I will need to get my waterproof jacket out again. Still determined to go, I've just put some wet lube on the bike chain. Thetford Forest is still good to ride in wet conditions, most of the time you are under the tree canopy and sheltered from the rain and wind, plus the soil is very sandy so dries very quickly. I've done races there the day after torential downpours and you would not know it had rained in the past 24 hours.
See y'all tomorrow, I'll be driving a blue Vauxhall Zafira T-reg