In a mixing bowl, whisk together flour, castor sugar, baking powder and salt.
Add softened butter to the flour and rub into the flour with your finger tips till it resembles bread crumbs.
Add 1/2 cup milk first and mix to form a soft dough. Add more milk only if needed. Do not knead.
On a greased tray, place the dough and pat into an 8” circle of 1 to 1-1/2 inch thickness just like a pizza.
Make an impression with a blunt knife across the circle so that you can easily take off the scones after baking.
You can also cut the dough with cookie cutters and transfer to the baking tray if you want to portion control.
Preheat the oven at 220 C (425 F) and bake for 15-20 minutes.
Remove the tray and cover with a towel and let it completely cool down.
If you want the scones to be crisp do not close with the towel.
Store in an air tight container and serve with jam or clotted cream.