The Break Down by Tatton Spiller was, in short, a good read. It was easy to understand, fun, and did a very good job at "demystifying" politics for the average reader with an interest in understanding politics but little technical know-how in regards to processes and jargon. Think of a world where conversations about politics didn't consist of squabbles and name calling, but rather calm and reasonable discussion - you've got the central ideas of this book!
One of the things that I loved most about this book is the fact that it's so easy to read. So often, politics is made boring with dull technical and legal jargon, referencing events and people who none of us have ever heard of (much less care about), and written in a way that manages to confuse everyone but the writers themselves. Spiller made sure not to bog down his explanations with unnecessary technical details whenever possible, which I loved, because it meant that this book wasn't boring (unlike many other political science books whose names I shall not mention). It was a very easy, quick read. I'll admit, sometimes the pop culture references seemed a little bit forced, and the lack of technical details did mean sacrificing some depth, but given the nature of this book, I don't believe that an in depth analysis of any of the topics presented was the author's objective - rather, it was to give the reader a basic understanding of some of the key ideas of British politics, so that they could go on to form their own opinion.
And in this objective, the book most certainly succeeds. As someone who is in the unfortunate intersection of being somewhat interested in learning about politics while still knowing nothing about it, The Break Down was a great introduction into the wide world of British politics. It covers a bunch of different topics, such as major factions / ideologies, current (at time of publishing) debates in British politics, and a simple overview of how the systems of government and politics function in Britain.
And note that I say British politics - this book is 1,000,000% U.K.-centric. Just something to keep in mind if you're interested in reading this. As a non-Brit, I still found it interesting and useful, but all of the content of this book is based around the U.K.'s political system.
All in all, I'd say that this book is a great starting point for anyone who's looking to learn more about British politics but doesn't have much of a background in it, or know where to start. It's easy to understand, and the writing style was fun to read. Would recommend!