It's a toughie and no mistake. Most weeks, for me anyway, it's more of a GK puzzle with a lot of googling of unfamiliar books and cryptic parsing of variable difficulty. I think I only keep doing it because the prize is £40 and I've won it twice!
This was a good witty puzzle from a newer setter spreading his wings. I like the TLS puzzles - nothing wrong with obscurer authors or best-sellers from the past, both of which feature. There's also the odd £40 as Fleshpots points out.