I think it has potential, but needs more work. I'd like to see a bigger focus on the images, and less on the other sections.
Three big "deal-breaker" issues for me:
1) The image on the home page looks like it's had 100% JPEG compression, and been resized (upscaled). You have much better ones that could go there (or get a better quality copy of the same one).
2) I sometimes like to resize my browser to half width/height, as I can be doing many things at once and despite having two monitors there isn't enough space for everything. Your website and all the content resizes to fit my browser window - so on my screen the text size is so small that it's unreadable.
3) I clicked on "Shop", clicked one of the options - and it went straight to PayPal

. I expected to see a list of images for sale...?
And some smaller issues ones:
1) You mention that you were Cornwall Photographer of the Year, but don't provide any more information or a link. Google doesn't seem to tell me more, either.
2) The "CV" page has a lovely bright image in the background, but it contrasts badly with your self-portrait which is quite dark and moody. I'd keep the background, but get a brighter more smiley image of yourself

.
3) The portfolio section needs a re-think. It takes too long to scroll through the images. Although many of them are great, I'd like to see a list of thumbnails (or something similar) so I can personally choose the ones that I want to see bigger.
Sorry if this all sounds harsh

... But it is a good start, and with some work and more emphasis on the pictures, it would be a much nicer website to use.