All banks have different account opening criteria, however all will need to see something showing your name and address to satisfy money laundering regulations. This can be a bank or utility bill or the bank can check the electrol roll. All banks will search credit reports to check for adverse information, they can also check the same reports for positive information which they may accept as proof of address. If your chap is on the Voters roll, lived at his address for several years, the bank may be able to do internal checks and obtain what they need, otherwise he will need provide whatever documents the bank requests.