I've just stumbled across this and thought it might be worth posting here. I'm sure it's probably in the BMFA publications somewhere but I hadn't seen it.
No model aircraft over 7Kg will be able to be flown within the protected areas as shown in the link during the specified dates. It's quite a big area and I know that it does cover more than one jet club.
http://www.caa.co.uk/application.asp...etail&nid=2099