Place sultanas, currants, sugar, water and margarine into a saucepan and bring all ingredients to a boil, stirring regularly. Simmer for about 5 minutes.
Pour the mixture into a bowl and add flour, salt and bicarb and mix well. Pour into a loaf tin.
Bake in the preheated oven for 75 minutes. Use a skewer to pierce loaf and if it comes out clean the loaf is cooked. Enjoy xxx
This loaf is best serve a day or so old with plenty butter on top.
For a different variation replace a quarter of the water with rum, and add a tablespoon of treacle when simmering for that added depth in taste.
This loaf can be frozen easily