Hello Mishigato,
Well, I went back and requested I got retested, and this time I did have antibodies. Apparently they can show up sometimes and not at others, which is irritating! My c-peptide was also low. They did other tests to rule out other forms of diabetes (I can't remember what now, as this was a year ago) and the answer is, I'm a type 1 diabetic, but very likely to be LADA. This fits perfectly with what happened to me because I feel I had it coming on for several years - minimum 10yrs. The first real clue was when I decided to stop using salt in food in the year 1999 because every time I ate, I'd get a really dry mouth afterwards, and all I could imagine this could mean was that I was using too much salt. Obviously now I know what that really was. I got generally more ill and more thin over time until things got completely out of control back in early 2008 and I was finally diagnosed.
When I was honeymooning I was on 1-3 units for each meal, and nothing at breakfast, and this went on for 11 months. I only broke out of the honeymoon when I got a chest infection and suddenly had to find a way forward with these rising sugars, so I started carb counting with ratios off my own bat. Before that I'd refused to do the DAFNE course because I thought it was totally pointless whilst honeymooning. Now though it generally works for me but sometimes I'm more sensitive to insulin than at others. I don't feel I have a level playing field, so it's just quite difficult to deal with sometimes.
Good luck to you, I think it's possible you're in the exact same scenario as I was - a hard place to be, not quite knowing whether this is true or not. I had to accept it in the end as the medical evidence finally came up with the reality of the situation - and actually, it was a great relief to truly know what was going on.