Traveller's Joy (Clematis vitalba)
The hedgerows of Dorset are full of this stuff, it can be found anywhere on chalk and limestone soils and where it occurs it can be abundant.
The Traveller's Joy is a double win for our wildlife population as the lovely little cream flowers come out in mid-summer and are a popular nector source. Then, in autumn, these massed seed heads appear and so our seed eating birds take their turn.
It is certainly one of our more scruffy plants but it really is lovely where ever it occurs and in both of its states.