I always shoot a little ‘aide-memoire’ when I am out taking pictures. Could be just a street sign or the name of a building, in this case it was a plaque on the wall of Christchurch, Spitalfields with interesting information and dates. The Rector, the churchwarden, the architect and even the builder are mentioned. It’s a great help in remembering your exact location when it comes to captioning and filing your pictures. It’s also worth remembering that the EXIF information in your picture file will give the time and date that you took the photograph. I feel sure in a few years time that all cameras will have built in GPS to identify the spot but in the meantime…..