 The research aims to test the role of self-incentivising implementation intentions in smoking cessation among prisoners aged 18 and over, enrolling on a stop smoking programme provided by Livewire within Risley Prison. The effectiveness of self-incentives has been successfully seen previously within health behaviour change, but not within smoking cessation ongoing randomised controlled trial in alongside community stop smoking services, and local workplaces. This research will build on this by testing the effectiveness of self-incentives in prisoners stop smoking attempts. 