I need to get a loan for about �3000 to pay for my wedding but my credit rating is really really really bad, ?

If you really want ot get married do it cheap now and renew your vows with all the trimmings when you can afford it. Rings are really cheap in Argos, you can find a nice dress and suit most places. My husbands suit cost �50. And why not go for a family meal or drink in a nice pub after the ceremony. Me and husband did exactly that 15 years ago and still are very happy together (although we never got to do the expensive version of getting married). Won't cost you anywhere near �3k.