When opening a bank account banks have an obligation to make sure that the person opening the account is who they say they are.
You have to be able to prove two things before you will be able to open a new account - who you are and where you live. These checks are necessary to satisfy money Laundering Regulations and apply to new and existing customers.
Commonly accepted proof of who you are would be a current Passport or Full NI Driving Licence (a new photocard licence). You could also use a UK photocard driving licence (provisional or full), current EU national identity card, a photo student identity card or Benefit Book or Notification letter from the Benefits Agency.
You could use a current rates bill or a Utility bill that is less than six months old. Alternatively a Tax Notification, Bank Statement, Driving Licence, bank/building society or credit-card statement or Home or Motor Insurance Certificate would all be acceptable as long as they showed your current address.
If you cannot produce any of these types of identification you should speak to your local branch who may be able to help you find some alternative forms of identification.