Pre-heat the oven to 220 C.
Mix together the flour, baking powder, salt and sugar, then rub in the butter and oil until the mixture resembles fine crumbs. You can do this by hand, or in a food processor. If you use a food processor, don't overwork the dough. A few short pulses will do it.
Stir in the raisins, then make a well in the centre and pour in the milk.
Mix with knife, using a cutting movement, until everything is roughly pulled together. The dough will be very sticky at this point.
Flour your counter and your hands. Scrape the dough onto the floured surface.
Knead very lightly to help work some of the flour into the dough, while shaping it into a round about 3cm thick. The “kneading” shouldn’t take more than a minute. The dough will still be sticky when you cut it.
Cut into 8 wedges and place on a greased baking sheet. Brush each scone with the beaten egg, sprinkle with sugar and cinnamon and bake for 15-20 minutes until risen, golden and springy to the touch.
Cool and then cover with a tea towel or put in a tupperware container to keep them soft for 2-3 days. These are delicious served warm with butter.