Ensigns
| Flag | Date | Use | Description |
|---|---|---|---|
| 1801 on | Blue Ensign, used by some organisations or territories associated with the UK and also used by Royal Navy Captain of Merchant Navy Ship – e.g., RMS Queen Mary | A blue field, with a Union Flag in the canton | |
| 1864 on | Government Service Ensign (previously the Transport Ensign or Admiralty Ensign) | A blue ensign defaced with a horizontal yellow anchor | |
| 1801 on | Red Ensign, used by the Merchant Navy | A red field, with a Union Flag in the canton | |
| Civil Jack | A Union Flag with a white border | ||
| 1931 on | Civil Air Ensign, used by civilian aircraft and at civil airports | A blue and white cross on a light blue field with the Union Flag in the canton | |
| 1943 – 1945, 1949 – 1968 |
Flag of the Civil Defence Service/Civil Defence Corps | A blue and yellow flag defaced with a Tudor Crown and the letters CD | |
| Standard of the Royal British Legion | A blue ensign with a yellow band across the middle with the words Royal British Legion and the name of the branch |
Read more about this topic: List Of British Flags