On 16 December 2021, the ONS published experimental statistics (ONS) on the population of England and Wales by ethnic group and religion (ONS).
Ar 16 Rhagfyr 2021, cyhoeddodd yr ONS ystadegau arbrofol (ONS) ar boblogaeth Cymru a Lloegr yn ôl grŵp ethnig a chrefydd (ONS).