In addition, those patients who are not on metformin will undergo more comprehensive sampling and a second visit, between four to six months, after initiation of metformin. As current guidelines suggest all patients who are newly diagnosed with type 2 diabetes should be treated with metformin the investigator will ask the patient and General Practitioner to consider initiation of metformin, although this is a clinical decision that will be made by the GP. Between four to six months after commencement of Metformin the patient will be asked to return to the clinic for a second visit where additional samples and measures will be taken.