hiya, davee
there was an article in the kitchen garden about growing grapes ,the orchard house method,also known as the cane and ring method.. aim to grow your grapes to 1.2m in a pot. once the grape is mature, support with 3 canes, allow side laterals to form once the grape reaches the height and train over the circle of pipe around the canes..grapes are brought in in late winter and put out, after fruiting, in autumn..we're going to try 2 new grapes with his method .
if this makes sense or you need any more info, I can scan the article and send it for you ;D