here are some links to aerial views, that might be useful in additional to actually having visited site (not a replacement though) when drawing your open space axonometrics to refresh your memory - but be careful: some photos are a little our of date...
if you have a MAC: apple maps does a 3D aerial view, which look a bit wonky like this on the right:
or BING MAPS Link here
search wood green and zoom in:
top right corner: select option BIRD'S EYE and unselect LABELS (at bottom)