London EC3N 4DH
The General Lighthouse Authorities of the United Kingdom and Ireland (GLAs) comprise:
• Trinity House
• Northern Lighthouse Board
• Commissioners of Irish Lights
The Research and Radionavigation Directorate (R&RNAV) undertakes research and development of physical and radio marine aids to navigation (AtoNs), support systems and their integration to support the GLAs' mission "to deliver a reliable, efficient and cost-effective Aids to Navigation service for the benefit and safety of all mariners".
Key research areas include Marine e-Navigation, Global Navigation Satellite Systems and their augmentation, Enhanced Loran, Automatic identification Systems and Virtual Aids to Navigation, and Visual Signaling including Lights.