Preheat & Prepare: Preheat oven to 180°C (160°C fan). Grease and line two 20cm (8-inch) cake tins.
Mix Dry Ingredients: In a large bowl, sift together self-raising flour and baking powder.
Mix Wet Ingredients: Cream butter and sugar until light and fluffy. Add eggs one at a time, mixing thoroughly after each addition.
Combine Batter: Gradually fold in the dry ingredients and milk until a smooth batter forms.
Bake: Divide batter evenly between the cake tins. Bake for 20-25 minutes or until a skewer inserted in the center comes out clean.