01 - Preheat the oven to 400°F and line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, sugar, baking powder, and salt.
03 - Add the cold cubed butter to the dry ingredients and cut it in using a pastry cutter or fingertips until the mixture resembles coarse crumbs.
04 - In a separate bowl, whisk together whole milk, egg, and vanilla extract.
05 - Pour the wet mixture into the dry ingredients and gently mix until just combined, avoiding overmixing.
06 - Fold the semi-sweet chocolate chips evenly into the dough.
07 - Turn the dough onto a lightly floured surface and pat it into a 1-inch thick round.
08 - Cut the round into 8 wedges and place them on the prepared baking sheet, leaving space between each scone.
09 - Brush the tops of the wedges with a little extra milk to promote a golden finish.
10 - Bake in the preheated oven for 16 to 18 minutes, or until golden brown and cooked through.
11 - Allow the scones to cool slightly; serve warm or at room temperature with clotted cream.