That would make it an early large flowered variety and group 2 for pruning which should help in the search.
Is this the first, second or only flush of flowers this year? That will help to ID it as there are an awful lot which are that colour and size. If you want to have a look through some yourself, this is a great site:
Try the Picture search.
I have a couple - one has 3 varieties and the other tree has two. They took a few years to start producing fruit. The main issue for me is that they are in a fairly open position and in central UK we often get cold cold snaps which can reduce pollination (or reduce the number of pollinators about) but it sounds like your sheltered position will be ideal. Another problem is pear rust but that can be kept on top of with a bit of vigilance and picking off affected leaves before the pustules form underneath. Make sure you prune them properly as each grafted variety may have a different vigour then the others. To compensate, you prune the weaker varieties HARDER than the vigourous ones in winter (a fact which seems to go against common sense which is why some folk get it wrong.)
Looks like privet flowers to me.
Fast growing 'privacy' evergreens which only reach 6ft, have all year round flowers, need no maintenance and can be grown in a pot.
OK, they don't exist but I wish people would stop asking for them!
Pigeons scoff the ivy berries around here Fairy but pretty sure their nests are (very) basic twiggy things and don't incorporate mud. Thrushes line their nests with mud but it does seem a bit on the large side for that!
Have a look through these:
I think nut got it - Akebia (Chocolate vine):
You'll get moisture no matter what you glaze it with - ventilation is the key so make sure you build in some vents. This is especially important in summer as temperatures can climb very high and cook your plants if you're not careful. Twinwall is excellent stuff and is easy to cut. I used it on my coldframe which has lasted 20+ years and looks like it will last another 20!
Definitely not a clematis. They may be passion fruit.