TB, I don't know, of course, if this product is available in the U.K, but were just in the final throes of rebuilding a kitchen and after looking at granite ($70 per square foot intalled (US)), marble (to soft) hardwood... (various problems) and standard laminate, we were very pleasantly surprised at the quality and value of Wisonart's High Definition line. It's textured and looks all the world like granite. It's carries a good guarantee and easy to install (although we had the job done).
One word, at least here, the style for kitchen sinks is now the 'undermount'. This doesn't work very well for any laminate due to water absorption. However, Wilsonart has a special product they call a "Ring". The Hig definition topping is attached to a large piece of waterproof backing rather than the chipboard. One sets the undermount sink into it and then sets the whole thing on the counter. The regular Wislonart then butts up against it and voila...
http://www.wilsonart.com/