Andy, there are plenty of book publishers for a coffee table book in the UK, you should give it a try.
Alternatively, you could contact one of the photo stock libraries. Getty Images comes to mind, but there are plenty of others.Both my son and daughter are photographers and they do it all the time.
The way it works is that your photos are displayed on the site and when someone wants to use it for perhaps an advert, calendar, etc they pay you for it's usage or buy it outright.