A recent case heard in the UK Privy Council (whose Judges are for the most part Judges of the UK Supreme Court) has highlighted the need for care to be taken when making these arrangements.
In the case (Whitlock –v- Moree) the deceased was a 90 year old business man. At the time of his death he had a substantial sum in his bank account. The year before he died he added Mr Moree to his bank account.