Preheat the oven 220°c/200°c fan assisted.
Lightly grease a large baking tray (or two smaller baking trays.)
Sieve the flour and baking powder into a large bowl.
Add the sugar and softened butter and rub the mixture together with fingertips until it resembles a breadcrumb consistency and there are no longer any large clumps of butter remaining. (Tip: Don't rush this step. Keep shaking the bowl gently from side to side and any large pieces will surface to the top.)
Crack and whisk the eggs in a jug and gradually add the beaten mixture to the bowl. It will start to form a sticky dough.
Add the lemon juice and milk. If the dough is quite wet you may not need all of the additional milk but save this for brushing over the scones before they go into the oven.
If adding sultanas mix them in now.
Lightly flour your surface and turn out the dough.
Roll the dough into a rectangle around 2cm in thickness. If the dough is quite wet add additional flour. (Tip: Don't overwork the dough.)
Using a fluted cutter cut your rounds and place on your prepared baking tray. Reroll any leftover dough and repeat.
Brush the tops of your scone rounds with a little milk or beaten egg and place in the middle of your oven.
Bake for 12-15 minutes until risen and golden brown. Depending on your oven they may need less or slightly longer I always keep an eye from 10 minutes onwards.
Once cooked remove from the oven and place on a wire cooling rack.