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  • What you asked us

    Rhyddhawyd ar: 2 September 2016 | Gwybodaeth gorfforaethol

    This section covers the questions raised during the question and answer panel session.

  • COVID-19 Self-Isolation Insights (COSI) Study

    Rhyddhawyd ar: 22 April 2022 | Gwybodaeth gorfforaethol

    A follow-up study on people's experiences during the coronavirus (COVID-19) pandemic .

  • 2007 test and 2009 rehearsal questionnaires

    Rhyddhawyd ar: 18 January 2016 | Gwybodaeth gorfforaethol

    Describes the questions that were tested during the 2007 Census Test in England and Wales.

  • User guide to divorce statistics

    Rhyddhawyd ar: 14 November 2025 | Methodoleg

    Supporting information for divorce statistics in England and Wales. Figures are based on information recorded during the divorce process.

  • Consulting with users

    Rhyddhawyd ar: 13 January 2016 | Gwybodaeth gorfforaethol

    Information about consultation with users of census data during the design and development of the 2001 methodology and outputs.

  • User guide to conception statistics

    Rhyddhawyd ar: 9 July 2025 | Methodoleg

    Supporting information for conception statistics in England and Wales, recorded during registration of birth and notification of abortion.

  • Privacy notice

    Rhyddhawyd ar: 7 July 2026 | Gwybodaeth gorfforaethol

    What personal data we process for the Safety During Childhood Survey and the post-survey feedback interview.

  • Maximising the quality of Census 2021 population estimates

    Rhyddhawyd ar: 9 December 2022 | Methodoleg

    How we maximised the quality of Census 2021 population estimates during the processing and quality assurance of the final statistics.

  • Your testing window

    Rhyddhawyd ar: 16 February 2023 | Gwybodaeth gorfforaethol

    Details of what you can expect during your Coronavirus (COVID-19) Infection Survey (CIS) testing windows.

  • Online study of COVID-19 attitudes (OSCA)

    Rhyddhawyd ar: 25 March 2022 | Gwybodaeth gorfforaethol

    A study on people's recent experiences during the coronavirus (COVID-19) pandemic in collaboration with the UK Health and Security Agency (UKHSA).