While the characters are by no means as lovable as the quotes on the book cover make them out to be, their racism in particular is just a matter of fact when it comes to history. As much as we would all like to believe that the Allied forces fought WWII with the emerging genocide in mind, plenty of people were unsympathetic and anti-semetic even AFTER the details of the concentration camp were revealed.
So this is an excellent publicised, easily accessible historical document. For example: they detail the post-war rationing excellently, and give us an otherwise unseen day to day insight into just how uncomfortable it was being British and at the behest of the rest of Europe/in debt to the US. Worth reading, worth bearing in mind as we look to the future.