Middlesex
From UK Flag Registry
| Flag Type | County Flag |
| Flag Date | 1909 |
| Designer | College of Arms |
| Adoption Route | Traditional |
| UK Design Code | UNKG7410 |
| Aspect Ratio | 3:5 |
| Pantone Colours | Red 485, White, Yellow 116 |
| Certification | Flag Institute Chief Vexillologist, Graham Bartram |
Notes
This is the traditional flag of Middlesex, the county that forms the central and north-west parts of Greater London. The seax is the symbol of the Saxons and the Saxon crown was added in 1909 to differentiate the arms and flag from those of Essex.
