Short review: The history of the Tudors is in large part a story of the English Reformation and I am glad that Ackroyd gave lots of time to the English Reformation. My European history is weak, so I don't have too much to compare this to for historical accuracy. I did read the Very Short Introduction to the Tudors about a year ago and obviously this is a much fuller picture than that. Ackroyd is a good writer and I look forward to reading the last of his trilogy of English history.
My full review is on my blog at http://bookwi.se/tudors-ackroyd/