Hi Janey, my jasmine is looking good as well, I thought that the good prune I gave it last year had improved it, it was growing right behind my greenhouse squeesing between it and the fence I thought it was in danger of breaking the glass!!
Can you just when its stopped flowering, get some of these staple hooks and take some branches upover and fasten in place! I think pruning things always helps you could prune back after hooking up and it will branch from there I would think.

That's a good idea Maggy, but its an old brick wall behind. I could though put more wires up and keep tying it in, then snip the arching bits off. Glad yours is doing well too...:o)