Some pictures here are free to be used by anyone, BUT please credit and link back, and please don't make derivative works, which includes cropping that alters the context.
Please also don't take any of my pictures and put them on your own Flickr stream as one well-known London tube blogger has done.
Also, I will probably delete any comments which include those gaudy award graphics. I hate them; Flickr is a quiet place for me and those awards are way too noisy.