In reply to Jamie Hageman:
I use Photobox quite extensively and I think their consistency has probably deteriorated a little over the years. I had one batch of prints arrive on some very poor quality paper, and the occasional problem with colour reproduction. In addition their delivery times seem to have become a little erratic, so I'd be interested to see what people recommend.
I've recently backed up all my photos to flickr so it would be a bonus to find a service which has a really slick interface to flickr.