Heat oven to 180c
Place flour in a large bowl and stir in baking powder, salt and cayenne pepper
Dice butter into tiny pieces and rub into flour mixture using finger tips only until mixture resembles fine bread crumbs
Stir in rolled oats and cheese
Make a well in the centre and add the eggs and buttermilk
Mix until the dough comes together adding a little more buttermilk if needed
Gently roll the dough out on a floured surface to 2-3cm thickness and cut out rounds
Place slightly apart on a baking tray; brush the tops with milk and sprinkle with 1 tbsp rolled oats.
Bake for 15 to 20 minutes until golden brow
Serve warm with cheese or butter