I'd be interested. Busy as everybody else. Pick a weekend and I'll say yay or nay.
Miketually did one at Hamsterly last year, combined it with the Trailblazers open ride. Met a few people off here and had a really good ride around the lesser well know bits. The other option is Kielder.
Still meaning too organise a Kielder 100 training ride. At the minute I've got a riding partner and we're organising our stuff together but I'd like a big ride in a group up at Kielder. Especially if it means picking the brains of veterans.