There is compelling and indisputable evidence that physical activity performed on a regular basis, is good for individuals, for society, for the environment and the economy. Yet, the physical activity of the population in the UK is low. The dominant position that physical inactivity currently assumes at city-level in Sheffield, means that the majority of society and particularly the least affluent are experiencing negative physical and emotional health with huge medical, psycho-social and economic consequences. The Move More plan sets out a framework for a systems approach to the promotion of physical activity in Sheffield. Under the banner of ‘Move More’, the plan is owned by the Board of the Olympic Legacy programme: The National Centre for Sport and Exercise Medicine in Sheffield. Move More is supported by all the major city partners, including; the Voluntary Sector, the NHS, both Universities, Sheffield City Council, Sheffield Chamber of Commerce, and Sheffield International Venues (SIV). The aim of the Move More plan is to provide the overall direction for increasing physical activity in Sheffield and to secure and align stakeholder commitment to that direction. Increasing physical activity at a population level is a system challenge and requires the input of numerous organisations, sectors and champions. The Move More plan is therefore intended to be inclusive of, and integral to the strategic and implementation plans of these stakeholders. The Move More plan is split into distinct sections with the main body of the plan focusing on the Vision and Mission of Move More, the challenge of increasing physical activity at population level and the outcomes to be achieved through the application of this framework. The principles that underpin the framework and the proposed programmes of work (ambitions) that are designed to deliver the outcomes are also outlined.