I plan to train grape vines up and over the top of a pergola to create a shaded, outdoor dining area. I am more interested in the aesthetic of the vines and their shade giving properties than in growing crops. Getting decent fruit would be a mere bonus. I am pretty unlikely to make wine from them regardless of how they turn out.
My question is what variety to choose and what I should consider in terms of planting?
The climate is Southern England.
The location of planting would likely be an existing soil bed along the side of a fence. This would mean the roots would be in shade all day long and the vines would only get sunshine once they had neared the roof of the pergola.