This guide aims to provide easy to follow, step-by-step guidance and resources to support organisations to use evidence to influence policy and practice. The guide is split into three parts: Part 1 outlines how you can generate evidence that is relevant, robust and persuasive to the stakeholders that you are trying to influence. Although this guide is primarily about using evidence, this part of the guide helps to ensure you have the quality of evidence you need to maximise your chances of influencing policy and practice. Part 2 explores how this evidence can then be used to influence (i) internal policy and practice; (ii) external policy and practice, and (iii) future funding and commissioning decisions. It concludes by providing ‘10 top tips for using evidence for success’. Part 3 identifies a range of resources that you can access to help you achieve your goals.