Why have you taken a £1 charge?
Pre-authorisation (pre-auth) is a banking term describing a practice where money is not taken from the payee's account at the moment the transaction is made. The amount charged is instead made unavailable on that customers’ account – known as an authorisation hold.
Pre-authorisation is normally valid for 1- 5 days on debit cards, after this point the funds are released by your bank or building society back into your account.
We use Pre-authorisation period to make additional security checks on the card and the cardholder, to make sure that the transaction is not fraudulent. It also allows us time to make sure that the item/s being sold is/are in stock and ready to be shipped.