Of course you can join but there is a fee of 10 quid, juuuust kidding :P
So sorry to hear that you had a ''wake up call'' at the doctors, are they going to refer you to a nutritionist? I think that would be a good idea seeing as your cholesterol and your pre diabetic diagnosis is coupled with lots of intolerance's, it might be too much for someone unqualified in your health history - i guess your nurse could help there too.
Do you exercise at all regularly, if you want to get toned maybe join a gym and pay the extra bit for a few personal training sessions to help you get started and fight this head on, sometimes they do bundle deals especially in the new year. The new year is when all the offers are on so its best to join in the new year, in my humble opinion.
We are here to help you cope with all of this and to take the pressure off a little. Welcome to the healthy lifestyle thread