I haven't had mine done. I can trace my Dad's family back to the early 1600's, but the other main branches of the family tree are a mystery -- I need to do some international searches for the folks who came to Ellis Island. DH can trace his father's line back to the 1500's in Germany -- his family has published a book no less. We have thought about it but do not want to have the information sold.
You folks who have Scandinavian showing up in what you thought of as a British heritage need to remember that the Vikings did play a part in English history so that may be the link.