Dounreay Site Restoration Limited (DSRL) is the site licence company responsible for the closure programme at Britain`s former centre of fast reactor research and development. DSRL has held the site licence, waste disposal authorisation and other necessary legal permits for managing the site since April 1, 2008. Before then, the site was managed by the UK Atomic Energy Authority. DSRL is a wholly-owned subsidiary of UKAEA and operates under contract to the Nuclear Decommissioning Authority (NDA).