This article describes walk-in single session counselling, a form of service delivery that enables clients to receive one session of counselling without the usual hurdles of intake and wait times. We distinguish between walk-in counselling and single session therapy by appointment. We describe a mindset for therapists that supports walk-in work. We also describe the workings of a walk-in session using a transcript, with commentary, of an actual session. Benefits and possible applications of the walk-in counselling concept are discussed.