It's not a bad site, but then it's not a good one either.
You need to work on optimising your site for search engines. OK you have keywords in your meta info but TBH most search engines pay very little attention there any more; they look more at the content. Looking at your main page (possibly the most important one) you don't actually have any of your keywords in your content, the closest you come is "Newbury based photographer". As a side thought as you travel to Portsmouth and Southampton for your boat photos, is being Newbury based likely to get you many sales? If not don't mention it and advertise that the boat photos are Portsmouth and Southampton.
On the gallery page I didn't see any photos or galleries on my screen (1024x728) until I scrolled down. When you enter the galleries (at least the landscape and portrait ones) the photo slideshow went past each photo far too quickly and the transitions were irritating, if you are going to have fancy transitions make it a simple one and stick to just one type.
I find the empire logo top left confusing - is this part of your business or part of a template. The top left is where I would expect to find a branded link back to the front page of the website.
Your print prices are way too cheap for a piece of orginal art. I'd suggest a minimum of £8 for a 6x4 and about £50 for an 18x12. I am also confused as to your sizes other than 6x4 and 18x12 which are 3x2 they are all different aspect ratios meaning that your images will need cropping; who decides where that crop is going to be made (please don't say photobox). Plus I am suprised you give away your copyright, a licence for unlimted use is effectively the same thing and that way you can use the photos yourself on your website without asking permission from the client.
One final point (and one I am guilty of myself) you don't have many pictures on your pages (other than a small one on your front page), you are a photographer, sell yourself with your images.
It's a good start but with some more thought and effort it could be so much better.