Caledonian Maritime Assets Limited
"Caledonian Maritime Assets Limited owns ferries, ports and harbours and infrastructure necessary for vital ferry services serving the west coast of Scotland and the Clyde Estuary, and the Northern Isles."

The company is "wholly owned by the Scottish Government with Scottish Ministers the sole shareholders."

Notes source: https://www.cmassets.co.uk/about-us/. Local lighthouse authority
A local lighthouse authority is a statutory harbour authority, a local council or other body with responsibility for maintaining lighthouses, buoys or beacons in a specific area. Local lighthouse authorities are supervised by  general lighthouse authorities.