I don't know if you have noticed but all the images on Picture Sheffield now have the words (in white) "Picture Sheffield.com" on them. Even the small thumbnail.
Clearly they must have got fed up seeing the images on websites. Or perhaps have changed the policy (in these days of cuts) so that people have to always pay for the images. If so they have turned themselves into a commercial photo library, who also don't allow images to be just copied to hard drives.
Rather sad really, spoilt a