Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper.
In a large mixing bowl, combine flour, sugar, baking powder, and salt.
Cut in the cold butter using a pastry cutter until the mixture resembles coarse crumbs.
Gently fold in the peaches and ginger.
In a small bowl, whisk together heavy cream and vanilla extract. Pour into the dry ingredients and mix until just combined.
Turn the dough out onto a floured surface and gently knead a few times. Pat into a circle about 1-inch thick. Cut into 8 wedges and place on the prepared baking sheet.
Brush the tops with beaten egg. Bake for 18-20 minutes, or until golden brown.