is this a rusty variety of chestnut or diseased ?
No interactions present.
I believe it's the effect of the leaf miner Cameraria ohridella, which causes premature browning of the leaves.
Edit: The ID given above refers to a moth, was it intended to be the tree?
wondered why it jumped to invertebrates !
thanks ,will edit
Lat/Lng: 53.9605, -1.0832
OS grid ref: SE602519
location may be off,was photographed from York city walls,(which have many exotic tree species alongside )