Are You a Brit Without Ancestors?

I read a press release today about a new genealogy collection being released.  Something struck me as a tad odd.  The release began by stating that “One in two Brits with ancestors are found in the collection.”

Now, correct me if I’m wrong… but doesn’t that statement imply that there are Brits who don’t have ancestors?  I was under the impression that EVERYONE in Great Britain has ancestors.  In fact, I was under the impression that everyone on earth has ancestors.