Of course things can fall thru. The cost of going to court is massive, trying to force someone with no money (mortgage) or assets to fulfil a contract would be foolhardy. You just keep the deposit and try and sell again ....Once contracts are signed, things can't fall through - you can enforce the contract through the courts if necessary
No idea, I though that might have something to do with trusts. You'll have to ask @TomEdison to explain it.So does the beneficial owner change on the date of contract, even if the contract isn't definitive - that seems a bit strange?