There are some increasingly winter hardy varieties of apricot and nectarine now available which are suitable for growing in sunny situations in this country although you might have to prepare a fleece "blind" to pull over them in spring when they're in blossom if a frost is forecast. They will start fruiting after 2 years. The other option is Kiwi Fruit but in this country I believe the only hardy self fertile one is called Jennie? If you Google "growing Apricots, Growing Kiwi Fruit, etc. you'll probably get more details of growing needs and suppliers.