Preheat oven to 200°C (390°F) and line a baking tray with parchment paper.
In a large bowl, mix flour, baking powder, salt, and sugar.
Rub in the butter using your fingertips until the mixture resembles fine breadcrumbs.
Add raisins/sultanas if using.
In a separate bowl, whisk eggs and milk together. Reserve 1 tbsp for brushing tops.
Pour wet mixture into dry and mix into a soft dough. Don’t overwork it!
Turn onto a floured surface, gently press out to about 1 inch thick, and cut with a round cutter.
Place on the tray, brush tops with reserved egg/milk, and bake for 12–15 minutes until golden.
