General Lighthouse Authorities (GLA)
The three statutory bodies providing general aids to marine navigation around the United Kingdom and Ireland.
They are Trinity House, the Northern Lighthouse Board and the Commissioners of Irish Lights, commonly known as Irish Lights. Their respective areas cover England and Wales with the Channel Islands and Gibraltar, Scotland and the Isle of Man, and the whole island of Ireland.
The authorities maintain general aids, supervise many local aids and coordinate technical and operational policy. Harbour, port and other local authorities may separately provide local aids within their jurisdictions.
The Three General Lighthouse Authorities (GLAs)
- Trinity House: Covers England, Wales, the Channel Islands, and Gibraltar. Trinity House is the GLA for these regions and oversees the maintenance of lighthouses, buoys, and other navigation aids. Its headquarters are in London.
- Northern Lighthouse Board (NLB): Covers Scotland and the Isle of Man. The NLB is responsible for navigational aids in the waters around Scotland and the Isle of Man. Its headquarters are in Edinburgh, Scotland.
- Commissioners of Irish Lights (Irish Lights): Covers the entire island of Ireland, including the Republic of Ireland and Northern Ireland. Irish Lights ensures safe navigation around Ireland and the Irish Sea, with its headquarters in Dún Laoghaire, County Dublin.
Responsibilities of the GLAs
- Installing and maintaining lighthouses, light vessels, buoys, beacons, and other aids to navigation.
- Monitoring navigational aid performance to ensure reliability and effectiveness.
- Conducting regular inspections of navigational aids and maintaining their functionality.
- Ensuring safety and environmental compliance in their operations.
- Advising on maritime safety and working collaboratively with maritime organisations and governments.


