The first report of the Prisoner Policy Network, an emerging network of current serving prisoners, ex-prisoners and connected organisations who want to share their expertise and experience with policy makers. ‘What incentives work in prison?’ is the result of an extensive consultation exercise with over 1,250 people with experience of prison. Ensuring basic standards of decency in prison conditions; restoring trust in the incentives scheme; developing supportive prisoner and staff relationships; providing meaningful incentives; and giving prisoners the opportunities to rebuild trust, were all identified as key solutions.