That is gorgeous. Is it Halesia carolina? I've never seen one in the flesh.

Styrax is what I think it is.

I've never seen either Carol, so you're certainly right. Both gorgeous.

Thank you both for your posts. It looks more closely to the Styrax (Japanese Snowbell). Many folk here were guessing a Cherry Blossom tree, but that didnt look quite right with a closer look at the flowering. The smell from this tree was magnificent as I took the photo.