„Union Flag: approved designs”. College of Arms. Приступљено 2021-10-05. „For the avoidance of doubt and the sake of convenience, Garter King of Arms, under the authority of the Earl Marshal, has approved two versions of the Union flag as being accurate representations suitable for use. These are of the proportions 5:3, commonly flown on land; and 2:1, commonly flown at sea.”
flaginstitute.org
„UK Flag Protocol | Free online guide | With illustrations”. The Flag Institute (на језику: енглески). Приступљено 2021-10-05. „The normal proportions for the national flags of the United Kingdom are 3:5 on land, but ensigns are customarily made in proportion 1:2.”
