Abstract: Collaborative working between public sector bodies in the UK, sometimes involving partnerships with private sector and not-for-profit organisations, was promoted heavily by the Labour Government (1997-2010) under what is sometimes labelled "Joined-Up Government". The Conservative - Liberal Democrat Coalition Government, elected in 2010, appears likely to continue to promote such policies. The objective of this paper is to raise awareness of what may be seen as an important and developing agenda in public services in which accounting and accountability researchers are barely visible. The paper reviews the meanings and motivations of joined-up government and its development in the UK. A number of challenges are presented, including the need to refocus research from an entity to a network perspective; to assess whether joined-up government delivers value-for-money services; to join the debate on the development of related accounting techniques; to seek precision in specifying accountability mechanisms and to adapt our research methods.