Preheat the oven to Gas Mark 6 - 400f. Put 4 cups of Plain Flour in a large mixing bowl and use your fingers too rub 5 tablespoons of butter into the Plain Flour,could use the back of a Dinner Fork etc. Add the teaspoon of Bicarbonate Soda,the 1 teaspoon of salt,3 tablespoons of granulated sugar and the cup of Raisins.