Research Councils UK have devised Common Principles on Data Policy. This establishes their position on the management of research data produced by projects they fund, as well as taking steps to making data publically available.
Each Council has slightly different requirements in relation to proposals for funding and the research data arising from the projects they fund. The Digital Curation Centre have pulled together a useful summary table together with information on funders’ data policies. See their Overview of funders’ data policies web page for further details.