Negotiated agreements are widespread in mainland Europe as an alternative or complement to existing environmental policy tools such as regulation and taxes. A number have and are being developed in the UK to deliver environmental policy objectives. This report gives the background to the debate on the use of negotiated agreements, with examples of agreements. It assesses their effectiveness, outlines the essential elements of successful agreements and outlines how they might be used in the future. If you purchase this report then the accompanying Negotiated Agreements -Best practice checklist will be sent to you free of charge.