The Credit Services Association gives this advice:

“The chances are that the individual in question is being searched for by a number of different companies. These companies will be using the same tracing tools as the agency that you have notified, but if there is a delay in updating records, further correspondence could be sent. Whilst it is appreciated that making contact with the various agencies is frustrating, it is essential in ensuring that all records are updated. This will lead to your address being removed and will prevent any future correspondence.

There may also be a ‘link’ attached to your address with the Credit Reference Agencies. These ‘links’ could have resulted from fraudulent activity, or a link between a previous address you may have resided in and that of the trace subject.

The Government recommends that you view your credit file regularly in order to ensure that all of the information on there is accurate and up to date. By checking your credit file you will be able to see if there have been any wrong links attached to you and have them removed. This will also prevent any future contact by account collection agencies.”

Credit Services Association – Consumer Advice