Preheat oven to 400C/200F/ gas 6 and line a 9x5 inch loaf tin with grease proof paper and grease

Sift flour,sugar salt and baking powder into a mixing bowl

Add cornmeal,mix in,make a well in middle

Whisk together milk,eggs,butter and margerine,pour mixture into well.Stir until just blended,you must not overstir

Place in tin and bake until a skewer inserted in the centre comes out clean, about 40 -45 minutes.