I am ashamed to say that I have just been diagnosed with Type 2 diabetes at the age of 36 
I have completely overhauled my diet and cut out salt and anything fatty as well - I had gestational diabetes with ds1, insulin dependent, so I know what to do about diet.
I need to lose lots of weight and get fit and get my blood pressure down (I have been on medication for it since ds1 was born too, after severe preeclampsia it just never came down)
BUT I am very limited in my mobility, I had an operation on my knee last year, it didn't work properly so I am having a bigger one in a couple of weeks and the recovery period will be long. I can't walk very far, it hurts a lot if I push it and there's always the risk that it will buckle under me and cause more problems. I'm a supply teacher (can't apply for proper jobs until leg is sorted out) and I'm still doing the odd afternoon here and there, but I have to strap my knee up so tightly and be really careful, and I'm always a bit screwed the next day.
so what can I do to exercise? I can't lose weight unless I exercise (am really fat)