 Primary Outcome measures:Time to optimum treatment following diagnosis. Optimum treatment will be determined at 3 year follow up on the basis of whether insulin is required or not using C peptide testing if on insulin and HbA1c testing if not on insulin. If insulin is not required then the optimum treatment will be determined using the treatment guidelines for T2D or the subtype of MODY diagnosed. Treatment will be recorded 6-monthly up to 3 years. 