Lynden G (and anyone else) A fax to your MP only takes a couple of minutes, and won't cost you a penny, and it'll land in his or her pigeon-hole tomorrow. It's worth doing, and here is the link to FaxYourMP.
All I know is any time you talk to an MP to ask them why they haven't done something, or why they have, they always refer to their letter tray as a reason.
Either there have been masses of letters supporting them in something that you are against, or they haven't received any letters urging them to do something you want them to do.
So don't give them the excuse. Fax them, and keep on faxing them till they reply. Which they will, even if it's only waffle. And it just might turn out that your MP is one of the goodies on this after all, in which case he or she deserves to be encouraged.