Thank you Carana, very kind of you ...but yes as Anne says, I was meaning the light immediately by the front door to 5A.
I especially like the photo of the new street lamps against the photo of the old street lamps. The one taken after dark. The balconies shown are the balconies to block 6 immediately across the road to the steps up to 5A. The place where I have thought that the watcher might have watched from.
These pictures graphically show the shadows at the back of the balcony. The shadows that i alluded to in my theory

Wonderful illustration of what I was trying to explain. Thanks.
We are looking at block 6, which is immediately opposite, across the road to the side of 5A. The place where I thought that the watcher might have been
The balconies are in the middle of the large photograph, just to the left of the RH lamppost [We are viewing from North to South]As demonstrated by the comparisons of light emitted, the lamps in the after dark photo are considerably brighter than those at the time of Madeleines abduction, so the balconies would have been much less lit then than in this photo