If you are successful in asserting the last Will of the deceased is not valid this will result in the Will being struck out and any earlier valid Will will take effect. In the absence of an earlier Will the estate would be intestate and so the estate would be distributed in accordance with the intestacy rules. It is important to ensure that any previous Will or the intestacy rules will make provision for you when considering the cost effectiveness of disputing the validity of the last Will. If you do not stand to gain from a previous valid Will or the rules of intestacy you should consider carefully whether to dispute the Will at all even if you believe you have good grounds.