I take it that this is the "Tick the box" form that they have sent you? I am currently in communication with the DPC regarding my formal complaint against the Halifax's use of this form. In fact I have today supplied the DPC with the facts from someone who believes that they were actually deceived by the form into limiting their rights under the Data Protection Act.(posted 8461 days ago)Let's face it, the Act states that all you have to do is request in writing all the data they hold on you. That IS sufficient and the Halifax should by law simply comply with that request. Whose benefit is the form for? The DPC's office in a recent letter to me have stated for guidance in this matter that: "If you wish to receive ALL personal data the Halifax hold on you simply state so on their request form." I would therefore suggest that you take the DPC's advice in this respect, just write that on the form.
To read more about the form and it's use, read my earlier posting on the subject: "The HALIFAX - Do you believe you have been deceived?"
I believe from your reaction to the receipt of the Halifax's form that it only serves to further confirm my belief of it's real intended purpose.