This study is one of three pieces of work commissioned by Transparency International UK to assess the nature and extent of corruption in the UK. It investigates the different ways corruption manifests itself in the UK, and follows the publication in December 2010 of a national opinion survey on corruption (Part One in this 3-part series). This study is published together with an evaluation of 12 key UK institutions of governance responsible for enhancing integrity and combating corruption – the National Integrity System (NIS) (Part Three in this 3-part series).