Preheat your oven to 200°C (400°F).

In a large bowl, mix together the flour, baking powder, salt, and sugar until well combined.

Cut the cold butter into the dry mixture using a pastry cutter or your fingers until it resembles coarse crumbs.

Gradually add water, a little at a time, stirring with a wooden spoon until you form a soft dough.

Turn the dough out onto a lightly floured surface and knead gently for about a minute, just until it comes together.

Shape the dough into a round or flatten it to about 2.5cm thick.

Place the shaped dough on a baking sheet lined with parchment paper.

Bake for 20-25 minutes or until the top is golden brown and the bread sounds hollow when tapped on the bottom.

Allow the bread to cool slightly before serving.