Gone Away Information Network (GAIN)
Credit reference agencies are members of GAIN, a network through which lenders share information on customers with debts who have moved home without telling their lenders of a forwarding address. The information may include both the address the customer moved from and any address the customer has since been recorded as living at.
If you share a financial responsibility with someone else, for example a joint court judgment, a joint account or a joint application for credit, this will be shown on your credit file together with who you share the responsibility with and when the connection was created.
The credit reference agencies may be told about any other names you have been known by and your file will show who gave them the information.