Generally, the only way that your uncle would be able to set any of these transactions aside is if he could prove that your grandfather didn’t have the mental capacity to make the decision to give you the money.
Your uncle may not be happy with the fact that your grandfather gave you the money and your grandfather may not have made the right decision to do so but, provided he does have the mental capacity to make those decisions, he is free to do with his money he wishes.
Your uncle is going to have to come up with some medical evidence which proves that your grandfather was suffering from some kind of mental incapacity at some stage from 2012 onwards. There is not much likelihood of him doing that, then it’s unlikely that his claim is going to succeed.
If there is an order from the court for you to repay, how that would be enforced would depend on what financial assets, savings, and income you have.
Can I clarify anything for you?
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