The National Library of Guidelines is a collection of guidelines for the NHS. It is based on the guidelines produced by NICE and other national agencies. The main focus of the Library is on guidelines produced in the UK, but where no UK guideline is available, guidelines from other countries are included in the collection. NICE issues guidelines of very high quality. They are based on a systematic review of the evidence and have extensive consultation not only with clinicians but also with patients and, where relevant, industry. Professional associations do not have the resources to carry out this type of consultation but they can follow the principles set out in the AGREE protocol which helps guideline writers minimise bias, meet the needs of all stakeholders and maximise clarity.