Pre heat oven to 200c and line a baking sheet with baking paper and a quick spray of oil.

Add all the dry ingredients to a large bowl and mix to combine. Add the Butter and then using your finger tips rub the butter into the flour as quickly as possible until you get something looks like breadcrums.

Add the milk and combine with a fork so mixture comes together. Turn out onto a floured surface and bring mixture together quickly with your hands - do not over work the dough. Pat it down into a disk around 4cm high.