Add the dry ingredients to a mixing bowl and mix well.
Cut the butter into the flour as much as you can with a knife (you want to keep the butter as cool as possible), then use your finger tips to finish rubbing it into the flour as you could do with a crumble topping.
Mix in the raisins.
Add the milk a little at a time (you may not need all of it) and cut in again with a knife until the mixture comes together in a thick dough. It shouldn't be sticky but just come together.
Bring together into a ball with your hands.
Place on a floured surface and press down gently, no need to roll. You want it to be about an inch (2 ½ cm) thick.
Cut the scones with a floured fluted scone cutter, large cookie cutter or glass.
Pull the scraps together, press and cut again.
You will get between 4-6 scones depending on the size of your cutter.
Line your airfryer shelf or drawer, then carefully add the scones and bake them at 200c for 12-15 minutes until lightly golden. You can also bake in the oven (see notes below).
Leave to cool on a baking rack.
Enjoy!
Notes
If baking in the oven, pop on a baking tray and bake in a pre-heated oven at 220c/200c fan/gas mark 7 for 12 - 15 minutes.You can keep these scones in an airtight container for a couple of days, but they are best when freshly made.