Sorry here is a link to the pictures

http://picasaweb.google.co.uk/stuartforrest/BoxHedges#

I dont think they have been fine. These are new trees. The garden was replanted last summer I believe and the membrane laid together with the purple slate in the middle.

We always have a flooding event here, its the lake district!!

I did hear on the radio about box blight but they said you would have black spots on the leaves which we dont have. I have not seen any vine weevils either.

Perhaps we should try removing the membrane fully and also the Iron thing.