www.naturephotographers.net - A fantastic site with a good mix of amateur and pro nature photographers. I constantly seek ways to improve my images and photography and this site is full of people willing to share their extensive knowledge and as a result, this is the main site I post my images for their critique.
www.wildaboutimages.co.uk - My good mate Paul Bunyard has an excellent site that's well worth a visit. Puts a lot of effort into his photography and it shows.
www.aghphotography.co.uk - Had the pleasure of meeting Tony on a weekend shoot at Skomer and Gigrin. Another excellent site full of top class images. Again, the time spent in the field really shows in his images. A good bloke too!