The second component is the Anatolian Neolithic farmer ancestry, brought by the early farmers who migrated from what is now Turkey into southeastern Europe and then across the continent beginning roughly 9,000 years ago.

In modern white British people, this component represents the plurality of ancestry — roughly forty to fifty percent.

The third component is the Ancient North Eurasian / steppe pastoralist ancestry, brought by the Bronze Age migrations from the Pontic-Caspian steppe.

In modern white British people, this component represents roughly thirty to forty percent.

The relative proportions of these three components vary across modern European populations: southern Europeans have more Anatolian Neolithic farmer ancestry and less steppe ancestry; northern and eastern Europeans have more steppe ancestry.

British people have a mixture that reflects both the Neolithic farming expansion from the south and the Bronze Age steppe expansion from the east.