He identifies the dangers of the increasingly populist anti-politician rhetoric. And he shows that, despite unrelenting attacks on the failures of parliament, MPs and peers are much more independent of their parties now than in earlier periods since the second world war.

Depressingly, but all too accurately, he shoots down most of the proposed solutions to lack of trust – a written constitution means judges stand above parliament: do we really want that? More participatory democracy devices, such as citizens’ juries, lead to vociferous middle-class activists becoming even more vociferous. Meanwhile, the idea of ‘depoliticising’ issues is simply not realistic: some regulatory issues can be dealt with by the non-political expert, but there are many which need to be resolved by politicians representing different classes and interests.

Riddell’s analysis is the quintessential insider view. It is accurate, well informed, and, in my experience, gets the motivation of politicians right. Inevitably, because it defends so much of the current system, it will sound too complacent. It offers no solution to the problem of what you do when the public have so little faith in those chosen by our system to resolve political conflict. But he provides a proper starting point for addressing that problem, and by exposing the shallowness of so many of the solutions that have been proposed, he forces the serious student of politics to address the problem realistically.

As the public are so much better informed, and the politician so much more effectively scrutinised, politics is getting harder for the politician, but, in consequence, much better for the public. Politicians do need to constantly adapt to changing public expectations. But we – public and politicians – also need to be realistic about what is possible. And if we start to set realistic expectations about what it is possible for politicians to do, then faith may, inch by inch, return. Riddell’s book is a good milestone on the road to reality.