Sift flour, custard powder and mixed spice into a large bowl.
3
Rub in butter until the mixture resembles fine breadcrumbs. Stir in sugar and sultanas. Make a well in the centre. Add egg and enough milk to make a moist dough with a firm consistency.
4
Spoon level tablespoons of mixture, about 5cm apart on to lightly greased oven tray.
5
Sprinkle evenly with extra sugar.
6
Place in oven and cook for approx. 8 minutes, or until lightly brown and fluffy. Loosen cakes, cool on wire racks.