I have walked down the bank of the River Thames in London about half a dozen times and never noticed these fountains until last Friday, when I was out exploring possible night locations. When I framed up this photo in my mind I knew it could be special with a long exposure, so I came back six hours later with my tripod. When I arrived here the sun was only just setting, so I had to wait over an hour with my tripod on the camera in front of a posh restaurant waiting for the right levels of light.
This turned out to be a two second exposure at an aperture of f/11 if your interested. Overall I am happy to have recorded this view but it certainly isn't my favourite night photograph of London.