Posted: 10/07/2016 at 14:36
a wild monster of a clematis
I think I can see flower buds bottom left. That should ID it when they open.
There are quite a few such clematis, the montanas, though they will have flowered by now, the native wild one C. vitalba, that's at about the stage yours is at, small creamy/white flowers and the fluffy seed heads, Old Man's Beard. But lots more