summer1987: Thank you for your responses everyone!
The most annoying thing about this natwest card that it was them that pushed me to try and get the card! I only phoned up to change my address details!!
Having let an account balance of £1500 seems pretty reasonable as well, considering I earn around £21K a year and I'm paying off at least £100 every month.
It just seems I can't win, i dont want to keep applying for cards and keep getting turned down. I'm in a vicious circle and I don't even remember doing anything wrong.
I have signed up for both experian and equifax reports just to see. My next worry comes in cancelling these before the 30 day trials are up!!
Just a guess here, (i'm sort of thinking outside of the box due to the fact i'm sure everyone here has said what the first thing that comes to mind is on the BT being a proportionate rate of overall credit etc), but the part that i emboldened might be the issue.
Like i said its just a guess, but the bank may look at the fact that you have only been living at your new address for a short period of time, and to them the notification shows them that in fact you have only been there a matter of hours! (Unless they asked from what date you moved in?)
Also, assuming it is the case that it is not to do with the BT% or overall debt/available credit you have, have you registered your name on the electoral roll at your new place?
If it was offering you the card, and given the fact they egged you on to get it by promoting it, it might be that all they needed to do was the credit search, (and if that was okay then you would get the card), and when they did the search, the problem came up that you were either not on the register and or you weren't at that place long enough, or this is not the first time you have moved in the last few years. (Just speculating on that part).
The reason i thnk its more likely than the refusal per your debt and or credit score is that i had a friend who applied for a card and was declined, it was over the phone. The idiot on the other end informed my friend (the only time i have ever known this to happen) that the score required for the Natwest credit card (basic one, for folks over 18, not 21 or 25) was 679 and the score they got when they searched was 669. (I'm not even sure how accurate this is as i have heard conflicting stories on this, some experts say that banks and lenders don't see your score and others say they do when they search your profile). But if your score is above that and if it is a pre-approved offer before the search is executed i think the address is more of the issue than anything else.