Civilian marine services
Royal National Lifeboat Institution (RNLI) House Flag [2:3]
This flag flies at RNLI stations throughout the British Isles, including the Republic of Ireland.
RNLI Ensign [1:2]
This flag can also use a plain navy background and can be used in burgee form.
Trinity House Jack & House Flag [4:5]
Master of Trinity House (HRH The Duke of Edinburgh) [1:2]
Deputy Master of Trinity House
Trinity House Ensign [1:2]
By special warrant vessels of Trinity House wear the White Ensign on the foremast when accompanying the sovereign.
Northern Lights Ensign [1:2]
Northern Lights Commissioners’ Flag (uses pre-1801 Union Flag) [1:2]
This is the only British flag still using the pre-1801 Union Flag.
Northern Lights Commissioner's Pennant [5:12]
This pennant flies at the fore with the house flag at the main when a Commissioner is onboard.
Irish Lights Ensign [1:2]
The CIL is a cross-border body and this ensign only flies on British-registered boats in their service.
Irish Lights Commissioners’ Flag [3:5]
Lloyd’s of London Ensign [1:2]
Marine Society Ensign [1:2]
Maritime Volunteer Service Ensign [1:2]
Aberdeen Harbour Board Ensign [1:2]
Mersey Docks and Harbour Company Ensign [1:2]
Port of London Authority House Flag
Port of London Authority Chairman
Port of London Authority Vice Chairman
Port of London Authority Ensign [1:2]
Eastern Sea Fisheries Ensign [1:2]
North Wales and North West Sea Fisheries Ensign [1:2]
South Wales Sea Fisheries Ensign [1:2]
Global Marine Systems Cable Ships Ensign [1:2]
Port of Dover [3:5]
Company of Watermen and Lightermen Ensign [1:2]
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Flag Drawings © Graham Bartram, portions © The Flag Institute & Mario Fabretto