Preheat oven to 170 C / Gas mark 3. Grease one 23cm tube cake tin.
Sift flour, baking powder and salt together.
Cream butter and sugar together. Beat in the eggs one at a time. Stir in the vanilla and the sifted flour mixture. Fold in the sultanas, raisins and fruit peel mixing well. Spoon mixture into the prepared tin.
Bake in the preheated oven for 1 hour and 45 minutes to 2 hours. Makes about 16 servings.