If they refuse to sign the forms then you have to do a higher plan, I think 1200, so that it's not considered a VLCD. Some doctors can be a real pain about it and just disagree with the diet, others are just pleased that you're trying to do something about it. I know one lady that was seeing my Consultant had to get a doctors signature and they refused to sign it so my Consultant gave him a call and asked if it was ok to send him through some leaflets. So she sent him some stuff which told him all about CD and what it involved. He called her back and apologised, saying he would sign the form and that he didn't realise how well planned out it was, he thought it was a quick crash diet, get the weight off and that's it. So I'd suggest taking some time to talk through the plan with your doctor, explain what it involves, explain the steps, and explain to him why you think that it's the best thing for you. I don't know what medication you're on, so I don't know if a VLCD is likely to cause problems with that but if not, I'm sure that if you talk it through, make him aware of how it all works and show him that you really want to stick at it, lose the weight and keep it off, he'll agree to it.