Abstract
This article examines the process and outcome of defence reform under the Labour government, with a particular focus on the structuring of military input to defence planning. It argues that UK defence reform has been characterised by dynamism at the tactical and operational levels but that organisational politics between the services has impacted upon decisions surrounding defence capability procurement and force posture. The core executive has been able to structure military input to defence planning effectively at the tactical and operational levels. However, the core executive's capacity to provide clear guidance on the balance to be struck between capabilities and force postures relevant to contemporary and future conflict scenarios has been impeded by the British electoral cycle. Neo-classical realism provides, therefore, compelling analytical leverage in conceptualising British defence reform.