I did mine yesterday. I've been on a very strict diet for 4 months. I was nearly 19 stone before Christmas despite cycling 14 miles a day. I'm now 15,10 and STILL in the obese bracket. My healthy weight will be 11,11 if I can ever get there.
It really is hard if you love food and drink. But to me JM it sounds like you are probabaly healthier than the BBC gives you credit for. If you feel OK and do actually move a bit you'll be better than many.
I Certianly don't feel obese.