London Stock Photos is organised mainly by London postcodes, so searches start typing for the desired postcode, ‘London W1’ or ‘London SW1’ for example, The results will show a broad variety of images of that area, from restaurants to windows shop. To refine the results further, just add a keywords after the postcode, like "London NW1 + pub". This will allow you to narrow your results using the various image attributes.
Finding similar images
When you click on an image to view the larger single-image view, you will see a host of keywords under the main image. Clicking a word will allow you to execute a new search using that keyword. Note that the new search set will populate in your main window, replacing your current set of results.