More about Peach trees
Peaches are a luxurious fruit originating in the Far East and now grown throughout warm temperate regions. Peach trees prefer a continental climate, especially warm or hot summers.
Peach trees can be grown successfully in the UK. However if you want to be reasonably sure of success the best method is to grow as a fan on a south-facing wall, or in a patio container which can be moved indoors (to an unheated room or conservatory) during winter.
Peach-leaf curl is a serious fungal disease of peaches (and nectarines). It is transmitted by fungal spores which are active during late-winter / early-spring and are carried in splashes of rain drops. It can be readily avoided by covering wall-trained trees over winter and early spring with a frost fleece or similar. Peach trees grown in patio containers can also be protected simply by keeping them indoors over the winter.
All peaches are self-fertile - but that doesn't mean they don't need pollinating, it just means you don't need another peach tree nearby to cross-pollinate with. Pollen must still be taken from one flower to the other and since peaches flower very early in the season you can't always rely on pollinating insects to be out and about. If in doubt, you can hand-pollinate - here's an article on the my tiny plot blog showing you how.