Really bizarre. 75% of this is a plodding, chronological survey of Kingsley's life and work. With every publication along the way the text breaks off to provide a 2-3 page synopsis, some (mostly negative) lit crit, and then lurches on with the biographical stuff.
The title is "Amis and Son", and yet during the Kingsley bit (i.e. most of the book) Martin's existence is barely mentioned, let alone his work considered. There is certainly nothing on what we want and what the title and blurb promise, i.e. the relationshp between the two men and how they influenced each other's life, work.
Then when we reach Kingsley's death the chronology of the book is yanked back to Martin's birth and we're off again into the same lit-biog plod. Martin's bit is shorter, though. Fewer books, see. I also suspect it's because the Martin bit is tagged on the end as a way of flogging what would otherwise be an utterly inessential survey of a (these days) largely overlooked and unrated writer.
What's so odd, though, is how little the author likes both the Amises and their books. And his attitude to Martin is weirdly competitive. There's quite a bit about how they are peers, and some first person plural references to the two of them (Martin and the author), despite there being no evident relationship. This whole thing is then peppered with point-scoring about Martin's style, his lack of experience of real life, etc. Really tellingly, the illustrations the author gives from Martin's work then demonstrate how lively and funny his writing is despite (and sometimes because of) what the author is belly-aching about. They're the best bits of this mean-spirited and strange book.
Read "Experience", read Kingsley's letters (and Larkin's to him). Don't read this.