A general lighthouse authority (GLA) is one of three agencies primarily responsible for aids to navigation in the United Kingdom and the Republic of Ireland.
[1] They are divided into regions as follows: A local lighthouse authority (LLA) is a port, harbour, or other party providing navigational aids in a locality as part of its facilities.
[1] The powers of Trinity House and the Northern Lighthouse Board are currently established in the Merchant Shipping Act 1995.
[2] These include the inspection of aids to navigation provided by local lighthouse authorities, and the levying of light dues on vessels to fund their work.
c. lxxxi) established the Commissioners of Irish Lights, as successor to the Irish Lights Department of the Corporation for Preserving and Improving the Port of Dublin, as the agency responsible for all Irish coastal lights.