On September 1st , Pat and I found a gall at Worsbrough near Barnsley, which an I-spot user has since identified as the mite Aceria fraxinivora. We have never observed this gall previously, anywhere.
On the same occasion, we spotted a leaf on a Rosa shrub which was infected with either orange galls or a rust fungus. I would be interested for any comments on the cause of this. Arthur