Tobacco use is a major determinant of lung cancer risk; therefore, it is vital that a patients smoking status and history is recorded, and that active smokers are referred to improve smoking cessation rates. Speaking from the British Thoracic Oncology Group (BTOG) Annual Conference 2018, held in Dublin, Ireland, Sanjay Agrawal, MBBS, of the University Hospitals of Leicester NHS Trust, Leicester, UK, discusses the importance of this issue.