Sift together the flour, ground ginger and mixed spice and place in a large bowl.
Put butter, sugar, treacle, milk and bicarb soda in a basin and stand basin in a saucepan of hot water until mixture is melted and bubbly. Pour into flour mixture.
Mix and bake in a grease shallow tin for between 45 minutes and an hour.
Recipe by Hotly Spiced at http://hotlyspiced.com/gingerbread-loaf/