Peckham Rye with reduced tree render

Using an out-of-date version of mapnik I've played around with tree rendering in an attempt to remove trees which interfere with other features. This is probably the most successful of various options I tried. Trees are not rendered when they sit on landuse=residential or natural=wood.

 

Using a correlated subquery seems to be fairly efficient, but will have to try it on a GB extract.

Done