Preheat oven to 200C/400F
Line your large baking tray with parchment paper.
Add the flour, salt, pepper and sugar to a large bowl and stir.
Add the cubed butter, and use your fingertips to rub the butter into the flour until it resembles breadcrumbs. This should take around 8-10 minutes.
Make a well in the centre of the flour, then add in the milk, cheese and chives.
Use a knife to 'cut' the mixture, combining it together well.
Dust a clean surface with flour, then turn out the dough to knead. Continue to add flour if the dough gets too sticky.
Shape the dough into a disc measuring a height of 4cm/2 inches. Dip your mason jar or cookie cutter into flour, then cut out round discs of dough.
Place the dough discs in your prepared baking tray. It doesn't matter if they touch. You should make around 12 scones.
Place in oven and bake for 15-20 minutes, checking every so often to ensure they're cooking evenly.
Remove from oven and serve immediately with butter.