It is clear that Hutton has a strong socialist/leftward bias and he fails to be persuasive by not sufficiently supporting his views. This does not totally discredit the book though, and taken in context, there are some interesting points.
At the time this was written, the condition of the economy would have justified such criticism of the government of the previous decade. It is only with hindsight that we can see the long-term benefit of Thatcher's reforms. He does pick up on genuine weaknesses in the financial system of the UK; for example the failure to promote investment because of a priority for dividends - our failure to improve UK productivity since this was written is inexcusable.
His writing is sometimes quite rambling and, certainly towards the end, very preaching. Despite this, and its age, it is still readable and not at all technical, for those with limited economic knowledge.
I would only recommend reading this if you have an interest in the condition of, and events in, the UK economy towards the end of the last century. It is too old and opinionated to be of popular interest now.