Thanks for replying, sorry for delay. Been having computer problems.
With regards to medication, GP changed it because he agreed that the weight gain side effect of Pioglitazone combined with risk of cancer (didn't mention which one) meant that being on Gliclazide was better for me. He says that I can take that with Byetta, so going with him on that. Been on for a few days now, no sign of any ill effects.
Low carb wise, not very well. I've been strict with it, but because I've had a cold I have been naughty a few times and just pigged out. Trouble is, if I don't get the weight and sugars down quick, I will be on insulin within the next 2 months which I don't want.