You'll find it is run by:
http://www.motorsport-events.co.uk/
They are a great bunch, run a really good, fair day. I've done Colerne before and enjoyed it, almost as much as Abingdon actually. Last time we were there they were offering 15 mins with an instructor as part of the package. I learnt a lot in just 15 mins with him. I did happen to get the best instructor as well- Ed moore.
Sadly, the 205 gearbox won't be ready in time so I won't be there in the scrapper. I may pop along and spectate though.