Objectives The objectives of this study are:- i) To co-develop an evidence-based, multifaceted behavioural intervention for delivery during routine clinical consultations ii) To develop a training programme that equips clinicians with the knowledge, skills and confidence to deliver a behavioural intervention during routine clinical practice iii) To determine whether the behavioural intervention is acceptable and feasible to both healthcare professionals and patients iv) To assess whether the behavioural intervention can be delivered faithfully during routine clinical practice v) To optimise the behavioural intervention based on feedback from clinicians and patients.