Call it good fortune, call it good luck, call it what you like. I was gifted some frost-hardy named variety of Vitis riparia grape vines (var. Valiant) when I bought this house, my retirement home, in 2000. They see direct sun in the western afternoons. That's enough.
Early October, snow-capped mountain peaks all around you and you're picking the most unlikely of crops = grapes.
I have had the same family pick off the grapes for maybe the past 15 years. They trade carrots, several potato varieties, beet root and so on. When their kids were really little, I let them climb in the big house vines on the trellis, right up to my roof like Jack & The Beanstalk.
I've rooted the best of the best prunings as new started vines, sold no more than 300 of them. Canned and sold the grape juice (chap had a digestive issue, my grape juice was OK in his guts.) I make and eat taboluleh with my Lebanese friends.
Multipurpose crop. Look away back into agricultural history and you will seethe same multi-purpose sense in the early crops.
You all have a far milder climate in the UK. Touch of frost, no big deal. In your houses, I'd have long ago stuck a few CabSauv vines in the dirt and some Chardonnay. Buy some good yeast and treat yourselves to 50 liters of good wines.
Eat fruit. Make raisins. Grape leaves taste like grapes = tabouleh.