hi
i have just seen your request,i would find a recipe for normal xmas pudding and substitute the flour with gluten free flour,the rest of ingredients should be gluten free anyway.I am about to make a gluten free xmas cake and will be doing the same,replacing the flour.I have made normal puddings and they use plain flour so would buy gluten free plain,or for using self raising flour you can by gluten free baking powder or gluten free self raising flour.Sorry its not a tried and tested recipe but i'm sure it will be fine if you give it a try.