Not sure if I hadn't read this book before, but I'm sure I had at least read snippets.
It's easy to read, but I found it tended to be quite repetitive and offered very few insights into Rowan Atkinson, the person. Having seen Atkinson in "Black Adder", "Mr Bean", "The Thin Blue Line" and various movies, some chapters offered little more than a synopsis of various episodes of these series or films.
I'm sure with more research the author could offered more to our understanding of Rowan Atkinson. Alternatively, some more astute editing could have reduced the length of the book by many pages.
Interesting, but not insightful.