The 3 credit reference agencies in the UK are all member's of GAIN. This is a network of lenders who have provided information about customers who have incurred debts and moved home without giving information of a new address.

The GAIN entry on a perosns credit report will include any addresses, from which and to which the customer moved.

What To Do If You Think The GAIN Info On Your Report Is Wrong...

Simply contact the company who provided the information to the credit agency. Their details should appear on the GAIN entry on your credit report. You can also contact the credit agencies and they will contact the company for you and look into the matter to verify information.