I have written to each of the banks and other companies individually and listed the problems that need correcting. I have also written to the CRA's (Credit Reference Agencies) to have them help with wrong linked addresses, addresses I've never lived at, companies I've never heard of. They have been generally helpful, and have altered the data relevant to them and also contacted the organisations involved. They have also posted a notice of correction for me at my request. But, there is a limit to what they can do, as they can't make changes to the account conduct data, as that is the job of the institutions. In writing to one bank that had seven errors on my files, they made one change to one CRA. I then had to write again to get them to update the other two CRAs. The situation seems to be that I have to write a separate letter for each incorrect entry. If I try and mention more than one, they can't handle it. They only make one change. This is why I have written dozens of letters and I amfacing writing dozens more which will take months.