I used the soda bread recipe I had used before (buttermilk version). As I was using rice flour rather than wheat flour though, I added 1 teaspoon of baking powder and an egg as well to help things along.
This went with beer baked beans (last of the frozen left overs)
The verdict - tasty bread. Next time definitely use a mix of rice and tapioca flour - the tapioca being so starchy will help it be less crumbly.