I'd never seen this introduction from Asia before coming across it in the dunes. My instinct was that it was a kind of honeysuckle but looking at it I'm not sure why I thought that. Perhaps the leaves or flower shape are redolent of common honeysuckle. The flowers are yellow at first and then become pinkish which is a bit like a honeysuckle.

This introduction is not all common. There are a few sites dotted here and there in England, a couple in Wales but none in Ireland or Scotland.