Preheat the oven to 220c/200c fan/gas mark 7 or equivalent.
Line a large baking tray with greaseproof paper or reusable baking mat.
Sieve your flour into a medium mixing bowl. Chop your butter into small squares and add to the flour.
Use your fingertips to rub the butter into the flour. Keep going until you have a breadcrumb-like texture.
Add the caster sugar, sea salt flakes and baking powder, Mix well.
Gradually add the milk, mixing in a little at a time. Keep mixing gently until it forms a dough. You may not need to use all of the milk. If you add a little too much, simply add a little more flour. Try to work the dough as little as possible.
Turn the dough out onto a lightly-floured board.
Shape the dough into a rough rectangle. It needs to be a little over 1cm thick.
Use a 2 inch/5cm fluted cutter to check you have spread the dough out enough to be able to create 12 scones.
Start cutting out the scones with your cutter. To stop it from sticking, dip it into a little bit of flour before each cut.
Place each scone onto the lined baking tray. Make sure the scones aren’t touching. They will spread as they cook, so try to leave some space between them.
Use a pastry brush (or the back of a teaspoon) to spread your chosen glaze over the tops of the scone.
Bake for 10 minutes until golden brown.
Allow to cool on a wire rack.