In a large bowl, place the self-raising flour. Cut the cold butter into dice and rub the butter into the flour using the tips of your fingers until it has the appearance of large breadcrumbs.
230 g self-raising flour, 55 g unsalted butter
Add 1 tsp salt and a good grinding of black pepper (omit salt if using salted butter). Add 75 g of the grated mature cheddar and stir through.
1 tsp salt, pepper, 75 g mature/sharp cheddar cheese
Add the milk and stir well to combine.
175 ml milk
Transfer the scone mixture to a floured work surface and roll out using a rolling pin. Fold the dough over and roll again gently to press it together, so you have dough with a thickness of approx one inch (2.5 cm).
Cut out 8-10 rounds using a medium scone cutter and place them on a baking tray lined with baking paper. Don't turn the cutter, just press and remove.
Sprinkle the remaining 30 g of grated cheese onto the scones, making sure each one is well topped. Brush over the scones lightly with one to two tablespoons of milk using a pastry brush.
30 g mature/sharp cheddar cheese
Bake the scones for 20-25 minutes or until golden. Remove from the oven and allow to cool then serve.