Confirmation Statement Testing

As per previous emails from Companies House, is it still the case that testing of the Confirmation Statement can only be done using the company numbers below?
We notice that none of the company numbers have corporate directors, and so if we’re bound to using only the company numbers below, we would not be able to test that part of the Data Download prior to making the Confirmation Statement.

00001350
04549236
06060501
03950344
04615520
01966794

The CompanyDataRequest does only use a subset of companies in test mode and we have an example of the request and response on the schema status page. We have an example of a company with corporate directors here
Hope that helps