my question is, is my uncle allowed to sell the farmyard to my brother if i have already paid the purchase price but i have no documentation to prove.
Did you ever sign anything at all? It appears not.
The Law of Property Act 1925, says that all contracts for the sale and purchase of property must be evidenced in writing and signed by the parties. You have none of that and I am afraid, therefore, that your trust argument fails.
Your uncle, therefore holds the money on trust, but not the property.
He is free to sell it to whoever he wishes.
I’m sorry that this is not the answer you wanted, but there is no point in me misleading you.
Can I help further?
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