The award for most misleading title goes to this book. 
This book should be called “how I excuse all my MP mates of not really getting much done and what they do isn’t done properly”
I was fully expecting a critical book on the failings of leadership in the distant and more recent past too. There would be a lot of material there, but that is not what this book is. 

Don’t get me wrong, Hardman gives a very easy to understand overview of how the UK’s political system works, and indirectly impresses the desperate need for reform, especially with the House of Commons and the day to day work of the MP’s. They are busy. They are “normal” people elected to do a difficult job that never stops. They are so busy they make mistakes.
However I feel like Hardman excuses a lot of politicians for their mistakes, especially conservative MP’s. This could be my own negative bias, but this was my perception of the book. 
It didn’t therefore surprise me to find out that Hardmans parter is an MP. And while he is currently independent, he left labour and advocated for conservatives in recent elections, so her rather more scathing opinion of labour (and Lib Dem’s) didn’t surprise me, nor her scathing evaluation on how the MPs work-life balance is non existent. 
Either way, many people will find this a fascinating read, just be prewarned it is not the book you would expect based on the title.