I liked London Fields quite a bit. Hope to reread it someday. I also thought Amis' Money was good.
I wasn't as crazy about Other People. I thought it was borrowing too obviously from A Clockwork Orange.
I'm reading his latest, The Zone of Interest, right now. So far it's quite brilliant -- and very brave. I didn't like his earlier Holocaust novel, Time's Arrow. This is spot on, although it's naturally upsetting at times (justifiably so).
I think Amis is on a roll at the moment. His last two novels, Lionel Asbo and The Pregnant Widow, were both very good. I've read most of his work and would say my favourites are (in this order) Yellow Dog, Money and Dead Babies. The others I've read (most of them, including London Fields) I haven't much liked.