New member of this website. I'm with HSBC and have a debit card with them. They charge me £25.00 for every overdrawal I make, be it £10 or £50, which they explain are "administrative costs", i.e. sending an automated letter. Interestingly, they will not let me have an agreed overdraft that excludes such charges as my credit rating is to low. Surely if my credit rating is too low then I shouldn't be allowed overdrawals at all. Would these charges be deemed unreasonable?