Office of Fair Trading v Abbey National plc

Office of Fair Trading v Abbey National plc and Others [2009] UKSC 6 is a judicial decision of the United Kingdom Supreme Court relating to bank charges in the United Kingdom, with reference to the situation where a bank account holder goes into unplanned overdraft. When a bank customer uses an unplanned overdraft and then makes a payment request (whether by standing order, direct debit or using an ATM or debit card), banks generally make the payment as requested, and then charge fees (which may include "paid item" charges and unauthorised overdraft fees) which accrue on a daily basis whilst the unauthorised overdraft continues.

Source: Wikipedia — Office of Fair Trading v Abbey National plc (CC BY-SA 4.0)