The participant's General practitioner (GP) practice and/or practice nurse will provide care as normal for their patient.

Participants will be asked to attend a total of 4 SMI sessions delivered on a weekly basis.

The participant will provide a saliva sample for analysis. They will attend an appointment with their nurse to receive personalised results on their combined genetic and lifestyle risk for developing CHD in the next 10 years. They will then be asked to attend the 4 week SMI programme.

The SMI will incorporate a discussion to introduce self-management and why it is important, and about problems associated with reducing CHD risk and managing type 2 diabetes. Specific topics addressed will include health behaviours to reduce CHD risk and manage diabetes including diet and exercise, as well as behaviours specific to managing diabetes, including medication adherence and self-care behaviours (e.g. footcare). Sessions are patient-directed and employ a shared decision-making approach, such that participants work with one another and the practice nurse facilitator to identify specific problems that they wish to address, and to identify solutions and approaches to managing their diabetes and CHD risk

Coronary heart disease 10 year risk as assessed using the United Kingdon Prospective Diabetes Study (UKPDS) Risk Calculator

Psycho-social impact of the intervention conditions will be assessed using questionnaires designed to measure risk perception, self-efficacy, and motivation. Feelings of anxiety and depression will also be assessed.