24 Hours of Exposure UK Solo 
MTB Champs are being held just over the Border at 7 Staines Newcastleton. Events start on Friday 21st May and the race starts at Midday Sat 22nd for 24hrs of fun (sorry should that be hell !) Newcastleton has fantastic trails and the weekend will be action packed.
all the details are here http://www.sip-events.co.uk/solo-home.html and there is a £4K prize pot as well