Low carb diet is not recommended by NICE guidelines, mainly due to a current lack of evidence. However, some people do find it of value. We know that reduced carbohydrate diet (ie. Low but not NO!) does help reduce sugar fluctuation and improve control.
This is a very insightful blog into Tim's weight and blood glucose management when he tries a low carb diet. It is important to remember that your diabetes may vary and you may or may not get the same results. I would recommend talking to a health care professional before undertaking a low carb change as sudden changes in blood glucose control can affect complications such as diabetic retinopathy.