Written Statement: 2021 Census White Paper, Help Shape Our Future: The 2021 Census of Population and Housing in England and Wales (14 December 2018)
Datganiad Ysgrifenedig: Y Papur Gwyn ar Gyfrifiad 2021, Helpu i Lunio ein Dyfodol: Cyfrifiad o Boblogaeth a Thai yng Nghymru a Lloegr 2021 (14 Rhagfyr 2018)