There are murmurings of a Sringtime trip to the Ring over on uk-mkivs.net...
Stormy (South Manchester Scoobies) over on uk-mkivs.net is also organising a trip on the second bank holiday weekend.
For planning purposes it might be worth using Stormys trip, see link below (the Euro Combo Trip on the second bank holiday in May)
If you want to see what the Ring trips are all about then download my crap movie (link below), this was the September 2005 trip so pretty quiet compared to the Spring/Summer dates...
Right click on the RingSept2005.wmv link and select 'save target as'. Sorry but its nearly 300meg in size and will take a while but its worth it as it shows pretty much all of what these trips are all about - The great drive there and back, the social scene and the laps on the ring of course!
Make your interest known soon as for the social side, anything over 15-20 people becomes a nightmare to organise eating out wise. It's easier to then organise separate (but travelling together) parties for food and accomodation.