When is a marine licence required? The list of ‘licensable marine activities’ is set out in section 66 of the Marine and Coastal Access Act 2009 (MCAA 2009). In summary: • all vessels, aircraft or structures will need a licence to deposit, scuttle or incinerate any object or substance within the UK marine licensing area • all vessels, aircraft or structures will need a licence to load or begin towing in the UK marine licensing area, and • British vessels, aircraft and offshore structures are also subject to marine licensing requirements for certain activities carried out beyond UK marine waters, including activities undertaken in areas beyond national jurisdiction as provided for by the MCAA 2009 (as amended) The Marine Licensing (Miscellaneous Provisions) (Amendment etc.) Order 2026, SI 2026/676 extends aspects of the marine licensing regime under the MCAA 2009 to certain activities carried out by UK persons, vessels, aircraft and offshore structures in areas beyond national jurisdiction. The amendments implement the UK's obligations under the Biodiversity Beyond National Jurisdiction (BBNJ) Agreement (the 'High Seas Treaty') by bringing