I loved the book and cannot believe how much the film version sucked.
It seems obvious that whoever wrote the screenplay didn't bother reading the book first and was just handed a one page summary of what it was about. For those who have read the book, here are some notable scenes:
Fires at the oil refinery/tanker and all subsequent fires - Not in the film.
Bluewater - Not in the film
Dartford Tunnel - Not in the film
Floating body on the Jubilee line - Not in the film
London Eye - Not in the film
Of course you're wondering what was in the film, where I am wondering why have I just wasted two hours of my life.
For those who have not read the book, please do not buy this but direct yourself to the book, Which Play also sells and I do recommend.
As for the filmakers, you really need to send Richard Doyle an apology.