Mr. Kieran Culhane:

No, it was not those overall characteristics. It was specifically the characteristics of the RTB dataset when we linked the data on the dwellings to those other administrative datasets. We considered, for example, whether the principal private residence was marked as "No" in the LPT dataset. Had it ever been in the HAP scheme? Had the person living there ever been in the HAP scheme? Had somebody claimed rental tax credit on the property? It was those indicators that suggested the property, either because of the person living in it or the property itself, had previously linked with another administrative dataset as a private rented property.