pax britanica,
I have a particular interest in the old West London aerodromes (I'm in Twickenham), so I've dug out some links to other / old threads that you may find of interest:
http://www.pprune.org/aviation-histo...n-airport.html
http://www.pprune.org/aviation-histo...-hounslow.html
http://www.pprune.org/aviation-histo...s-age-map.html
Hounslow aerodrome was indeed on Hounslow Heath, and Hanworth Aerodrome is still remarkably similar today!
SD