Wellbeing outcomes of blood sugar control (HbA1c) target-setting in diabetes

INTERVENTION: There will be four sub‐studies: Sub‐study A: Randomised feasibility study. Sub‐study B: Semi‐structured interviews with patients on study acceptability and glycaemic target‐setting. Sub‐study C: Semi‐structured interviews with healthcare professionals on glycaemic‐target setting. Sub‐study D: Semi‐structrued interviews with patients on barriers to participation. STUDY PROCESSES In the feasibility study, participants will be randomised (stratified [Type 1 or Type 2 diabetes], random permuted block randomisation strategy) to one of two groups. After initial screening and run‐in, participants will be reviewed at three months for intervention delivery and six months for follow‐up. Semi‐structured interviews will be carried out with a sample of patients and healthcare professionals to explore experiences, views and opinions of participants on the acceptability of study processes, glycaemic target‐setting and barriers to participation. INTERVENTION Following a three‐month run‐in period, group one will have an explicit HbA1c target set 5 mmol/mol above their current HbA1c reading. Group two will have an explicit HbA1c target set 5 mmol/mol below their current HbA1c reading. Diabetes treatment of participants will not be altered. A series of validated psychmetric questionnaires will evaluate baseline (pre‐intervention) and follow‐up (three months post‐intervention) metrics of 'health‐related quality of life', 'diabetes‐related distress', 'wellbeing', 'empowerment' and 'self‐care'. CONDITION: Type 1 and Type 2 diabetes ; Nutritional, Metabolic, Endocrine ; Diabetes mellitus PRIMARY OUTCOME: ; Sub study A:; 1. Eligibility rate recorded as number of screened patients who were eligible against inclusion/exclusion criteria per month.; 2. Recruitment rate recorded as number of eligible patients who consented to participate in the study by 4 months.; 3. First follow‐up retention rate recorded as the number of participants who consent to participate and remain in the study until first follow‐up at 3 months.; 4. Last follow‐up retention rate recorded as the number of participants who consent to participate and remain in the study until the final study visit at 6 months.; 5. Response rate of the 3‐month and 6‐month psychometric questionnaires, recorded as the number of participants who consent to participate who fully complete the questionnaires pre‐ (3 months) and post‐intervention (6 months).; INCLUSION CRITERIA: Sub‐study A: 1. Aged 18 and over. 2. Has Type 1 or Type 2 Diabetes. 3. HbA1c >/=64;