This has to be one of the worst "history" books I've ever read. The authors, and I'm being generous in calling them that, provide no citations, no list of sources, and not even a rudimentary bibliography. Their "history" consists of wild suppositions and rely upon some pretty shameful inaccuracies. But it doesn't stop there. They also present ghost stories about phantom legionaries in York as if they were true and talk about a town in China populated by Romans as if it were fact despite the fact that there are no credible scholarly studies done on this alleged town founded by Roman legionaries. And really, any school child could tell you that a town called "Li-Jien" that was supposedly founded by a legion is probably a fake put out there as a joke. "Li-Jien"... Legion... get it?
I would avoid this book like the plague. Frankly, I'm livid that I bought it and wish Kindle had a return policy.