I absolutely loved Connolly's first crime novel, Layer Cake, back when I read it in 2002 -- and the film made from it is quite decent as well. A full decade after that book, he published this sequel, and a decade later I finally tracked it down and gave it a read. Layer Cake was all about a low-key criminal involved in the drug trade trying to make that classic "one last score" before getting out of the game. It felt fresh and real and jam-packed with colorful characters bouncing around between London and Liverpool.
I don't know if the passage of time has changed me as a reader, but I found this followup to be pretty tiresome. It picks up with our unnamed antihero narrator retired in the sunny Caribbean, when he's approached by Mr. Mortiner and two London crims with a proposition. This brings him back to the UK, where he is a wanted man, and from there, things spiral out of control, with cartoonishly tantrumy gangsters, sinister Venezuelan cartel gunmen, Brazilians, Irish brawlers, skeevy toffs, and the like. It's a convoluted, over-the-top pulp tale of money laundering and a Macguffin memory stick with lots of killing, culminating in what I would characterize as a distasteful use of 9/11 to put the final twist in the tale.
I think some twenty years on, the sheen has long worn off the whole London gangster schtick, and the slang (rhyming and otherwise) came across as tired and dated, and it's all just trying too hard. There's absolutely no one to care about in the whole thing, except perhaps one grandmother, and while I read it to the end, I can't recommend that others do the same. (Note: It looks like at one point this was slated to be a TV series with Jason Statham, but that looks to have gotten shelved.)