Inclusion Criteria:  Receiving input from the Here for Health Healthy Lifestyle Programme Aged 12-18 years Diagnosed with type 1 diabetes Type 1 diabetes diagnosis more than 1 year ago Hypoglycaemic aware or on a continuous glucose monitor (CGM) with alarms Willing to attend additional education on managing blood glucose and exercise Diagnosed with type 2 diabetes and on a stable metformin dose for 3-months or more BMI centile > 91st Access to internet-enabled device for video calling  Exclusion Criteria:  Severe learning/behaviour difficulties Severe autism Unstable blood glucose levels Glucose lowering medications other than metformin Underlying medical conditions that contraindicate physical activity