Mix flour, baking powder and salt together.
Rub in margarine and add the sugar
Add the egg and water a form a soft dough
Roll out to ½ to ¾ thickness
Cut out scones using 2” cutter. Place on a greased baking tray and brush with eggs.
Bake over the top of the oven set at 450f, gas mark 8 for 12-15 minutes