I have been watching this series since the beginning, and find it quite well done as to costumes, scenery, production values in general. I nearly fell out of my seat, however, when Wilkin picks up a bible in the home of the executioner and says to the son something like "Exodus is my favorite book." Bibles appear in later episodes as well in the hands of lay people, and a cherished personal bible is central to one of the later episodes.
Basic history of England, folks, there were no English language bibles prior to 1380, and the fact that lay people could not read bibles, which were in Latin Vulgate, became the impetus for revolution many, many years later. By setting this in the time of Edward II, who died in the early 14th century, this plot point, minor as it may be, is a jarring anachronism.