Nuclear licensed sites in Scotland have to comply with the terms of their site licences which are granted by the ONR which reports to the UK gov­ernment. There is uniformity of approach to licensing and regulation across all UK licensed sites. ONR has responsibility for regulation of nuclear safety (Nuclear Installations Inspectorate, NII), nuclear materials transport (Department for Transport, DfT) and security (Office for Civil Nuclear Security, OCNS). On the particular subject of radioactive waste, ONR is the lead regulator for the topics of management strategy, accumulations of waste, treatment, transport and storage. The implementation of the waste hierarchy, authorisations for disposals and movements of nuclear materials are, however, regulated by SEPA which reports to the Scottish government. The waste hierarchy requires all waste managers to consider managing waste by prevention, re-use, recycling, other recovery and disposal in that order of preference. In practice, ONR and SEPA have memoranda of understanding for identifying areas where both may have an interest and for identifying which regulator will assume lead regulator status.