The UK government white paper on tobacco "Smoking Kills" set targets to reduce rates of smoking among adults from 28% to 24% by 2010. The success of behavioural smoking cessation programmes varies according to the type of intervention delivered (Viswesvaran & Schimidt, 1992). Group support programmes are the most commonly delivered smoking cessation interventions in the NHS, although in order to understand which methods are most effective, it is necessary to identify which psychosocial baseline factors predict successful outcomes. This study analysed the role of psychosocial predictors of decision to quit and 4-week abstinence in a community smoking cessation programme.