The purpose of this paper is to investigate if positive behavioural support (PBS) can be an effective alternative to medication, and can aid medication reduction in people with a learning disability, autism or both who are prescribed psychotropic medication for behaviour thought to be challenging. STOMP is an initiative supported by NHS England which aims to reduce inappropriate prescribing of psychotropic medication, i.e. antipsychotics used for challenging behaviour in the absence of a documented mental health diagnosis. PBS has been described as the first line of intervention for behaviours which challenge, (NICE, 2015) and has been highlighted as a non-pharmacological alternative to, medication.