Posted: 29/08/2017 at 08:55
It's 'Avalon Pride', a peach leaf curl resistant variety on Montclare rootstock and is supposed to reach 2x2m. However, it has grown considerably more than that and did not appear to be slowing down when it reached 4x4m so I've had to prune it quite hard for the last couple of years, which I did immediately after harvesting (which is a fair bit later than recommended.)
The ideal time to prune them is in April when you can see the blossom which helps so that you don't prune off all of the fruiting wood! Like all stone fruit, you should never prune them over the winter as this risks them contracting Silver leaf disease.
I'm in Leics and the front garden is south-facing and gets hot like yours which I'm sure is why it does well.