Only for a while, and who cares?
My credit rating has been f**ked for my whole life, hasn't caused me any probrems.
Its easy to fix anyway, you can appeal against anything registered against you and all you have to do is be more convinceing than the others.
Also it only stays on your file for 6 years.
Also you can mend your credit rating within 3mnths when you are more liquid, fact of the matter is it sounds like your uncredit worthy anyway if you are skint, getting any kind of finance will only make matters worse, so what difference will it make other than you wont have to pay the c**ts and will be better off in your pocket?