Beat butter and eggs, add in the condensed milk, desiccated coconut, zest and juice of lemon, fold in self raising flour and baking powder.
Pour in a greased and lined loaf pan and baked at 170 degrees C for 40 minutes or until a skewer inserted in centre comes out clean.
Cool on a wire rack and then ice.
Mix lemon juice with icing sugar till a thick pouring consistency and drizzle over the cake.
Sprinkle lemon zest over.