A direct debit by definition uses your bank account rather than a card. Your card - depending on your bank - may or may not have your bank account details on it.
I don't know if regular payments can be taken from your card instead, if they can then it's not a direct debit, it's a continuous authority transaction. Whilst - from the customer perspective - the result is the same, continuos authority transactions have been known to cause problems for people - and someone else will be better placed to say if they are possible for IUP. If they're not, make sure you have your bank account details to hand to setup the DD.
I've got a bank statement with me so I should be fine. Thanks for that info though.
Reserved a 128Gb Silver 7 today at 12:30.