Wild Clematis or ......

Old Man's Beard, Poor Man's Friend, Boy's Baca or Travellers Joy, several names given to this vine of the Buttercup family found climbing in hedgerows or wood margins.
It's a plant popular with several species of moth. Birds and mammals use the furry seed heads as nesting materi
Apparently in bygone times the stems were used as a substitute for tobacco and in France the long stems were woven into baskets.
Its a close relative of the 300 species bred purely as decorative garden climbers.