Less than 1% of the worlds population as a whole has red hair. In the British Isles, the numbers are startlingly higher.
Around 13% of the Scottish population has red hair, but at least 35% are unknowing carriers. In Ireland about 10% have red hair, but it is reported that a staggering 46% are carriers of the red-head variants. For England, the estimate is 6% but more people are needed to confirm this.
When you test with myDNA.global, you have the option to contribute to our database, helping us discover more about red hair distribution across the British Isles.