In a separate bowl sift in your self raising flour, baking powder and salt. Stir to combine. In a measuring jug or large cup mix together the oil, milk and the vanilla paste, stir and set aside. Now using a wooden spoon fold in a 3rd of the flour mix until fully combined followed by a 3rd of the milk. Alternate the flour and milk until it has all been folded into the batter. Divide the mix evenly between the two prepared pans and bake in the oven for 20-22 mins until a skewer dipped into the centre comes out clean.