This is a very useful hack. The National Monument Record office department of English Heritage can search for aerial photographs. They return searches as Excel files with the location of each photo as an OS grid reference (e.g. TL 483 607).
This Perl program reads the Excel file and creates a Google
Earth KML (layer) file of pushpins for each photo. Loading that into GE shows you each photo on the map and you can "point at" the photos to get the associated date, reference numbers etc.