Between March 2006 and July 2007 smokefree legislation was introduced in Scotland, Wales, Northern Ireland and England, making virtually all enclosed public places and workplaces smokefree. Building on the experience of several other countries, the laws and regulations were designed to protect the health of workers and others from the negative consequences of breathing secondhand tobacco smoke. This article examines the impact that the legislation has had so far and provides guidelines for encouraging patients to stop smoking.