Only around 25,000 Swedish - born people live in the UK .
Millions of Britons have some degree of Scandinavian ancestry that dates back over 1,000 years to the Viking invasion of Great Britain .
Although only around 25,000 Swedish - born people live in the UK , millions of Britons have some degree of Scandinavian ancestry that dates back over 1,000 years to the Viking invasion of Great Britain .