The clue is in the title. It's the story of the show, it's not a reference work full of facts and dry interviews. For anyone looking for an exhaustive reference work about Only Fools and Horses this is not for you, such books are already available. Too often this kind of book can be deadly dull. They can never be as funny as the subject they are written about and are often simply just a litany of facts about it. Graham McCann's book about Only Fools and Horses is much more than that. It provides a wealth of interesting background material on how the show came about, how some of the show's iconic moments came to be written and how they were performed. There's also material on the earlier careers of the writer and the main stars. Above all it is a very warm tribute to the late John Sullivan, and a well written one at that.
The author provides his own opinion of the show throughout. This is fair enough, it's not a reverential history and it provides an insight into why some of the show's quality varied. If you are a die-hard fan of OFAH and think it never put a foot wrong then this book will not be an easy read. If you are more realistic and accept that like everything else it had high points and low points, then this is a fascinating work on how a TV sitcom is created and produced, nearly disappears and then becomes probably the most popular British sitcom ever.
According to some reviewers the book contains some factual errors. If that is the case, perhaps they should point some of them out so we could all be aware. I'm sure the author would be interested and if the errors are substantiated could then update his book. Either way, it's not something that will bother the general reader.