I thought 'Money' was quite good but 'London Fields' was impossible to get through. He has this weird thing about working class men - about yobs, really.
Actually I recently read his book about Stalinism 'Koba The Dread'. As always, well-written and entertaining but hamstrung by Amis's pomposity and self-consciousness. There's a bloody cringeworthy bit near the end in which Amis recalls an innocuous domestic incident - his daughter crying uncontrollably - and how he told his wife (arriving home) that ''her screams would not have been out of place in the cells of Gulag XYZ''. There is no tongue in cheek here.
I think I read somewhere that Amis is so worshipful towards Nabokov and Bellow that he is forced into attempting to be both simultaneously without much success. I haven't read much Bellow but I can see how this may be accurate - the mixture of knowingness and sentimentality, or grandiosity.
OTOH I regularly dip into 'The War On Cliche' and I think his literary reviews are excellent. He' got one of those really infectious styles that rub off on me after I've read some of his stuff, so that I have to stop myself from doing an Amis knockoff when I'm writing. I have ripped off his style in some of my music reviews. I feel that his style works for reviews because they're short and focused, whereas in his novels that show-off style just gets in the way. It all seems facetious and strained.