Not that I am aware of but depending where you live in the UK it may not be hardy.

Rhodochiton (Purple Bell Vine) is tender, but it may well come through this winter (depending on where you are) if it remains this mild. If it does survive, trim it back in the spring a couple of weeks or so after it comes back into growth when all danger of frost has passed. By waiting for growth to emerge you'll get an idea of how much to trim back (if that makes sense).