This is quite good if you have an existing interest in British Prime Ministers; Nick describes each of those featured and explains what they were famous for. There is some detail about the times they lived in, but overall, I did not find this particularly gripping.
Each PM gets about 15 minutes of descriptions and anecdotes, with contributions from other commentators (such as Ken Clarke and Lord Baker). You will probably have noticed that these CDs just cover a selection of (presumably the more famous/colourful) PMs; well, there is not much continuity, ie it just jumps from one to another without any reference to the guys that came in between, - which I feel might have helped to bring it to life.
I have a casual interest in many aspects of history and thought I would find this quite engrossing, but I am afraid despite it being informative, it did not quite do it for me.
I hope you found this review helpful.