Stew the fruit in a saucepan on your hob, until soft and cooked through then put in a gratin, pie dish or any oven-proof baker.
Preheat oven to 180C. Mix together the flour, sugar, coconut and rolled oats. Melt butter and golden syrup. Dissolve baking soda in the boiling water and add to butter and golden syrup. Make a well in the centre of the flour, stir in the liquid. Sprinkle over the fruit and bake until golden brown, approx 10-15mins.