Pandorea

This is for Googs (who I have just enjoyed a real lunch with)

This is the Pandorea jasminoides at our place. My main problem with it being similar to your plant is that no matter where I look, it only has three leaflets along each leaf (and one at the end), never four like in your picture.

But I still think this is somewhere near what you have - it may be you have a cultivar of this growing in ideal conditions, whereas ours is hot and dry.

This is half of the seed capsule - they make lovely little boats:

Anyone got any idea about Googs' plant?????