CHEESY GARLIC SCONES

• 1 bulb British garlic (or standard garlic) • 1⁄2 tsp sunflower oil • 70g unsalted butter, chilled • 70g Essential Cheddar • 300g self-raising flour, plus extra for dusting • 2 tsp caster sugar • 1⁄2 tsp salt • 1⁄4 tsp ground black pepper • 100g buttermilk • 1 large egg, lightly beaten • 1⁄2 x 25g pack chives, chopped