UK Office for National Statistics publishes research on annual ethnicity estimates for England and Wales
On 6 November 2026, the UK Office for National Statistics published research on new methods for estimating the population of England and Wales by ethnic group every year. Currently, detailed ethnic group breakdowns are usually collected every ten years through the national census. The ONS tested its new experimental methods against figures from Census 2021 to see how closely administrative data sources match actual census counts. For everyday readers, accurate population estimates by ethnicity help local councils and public services plan housing, healthcare, and education according to community needs between census years. However, the ONS emphasised that this release consists of research findings rather than official population statistics. The publication focuses entirely on testing methodology and administrative data quality rather than setting official policy or updating current population numbers.
What was announced
The UK Office for National Statistics (ONS) published research on 6 November 2026 detailing new methods to produce annual population estimates by ethnic group for England and Wales.
The publication focuses on how the research team tested these experimental calculation methods against data collected in Census 2021. Rather than issuing updated population numbers, the document sets out research into using administrative data to trace ethnic demographics between censuses. The ONS specified that this work was completed by its Population and Migration Research and Development team and stated clearly that the release does not contain official statistics.
What it means
In England and Wales, detailed information about population ethnicity is gathered during the national census, which takes place every ten years. Between these census events, official figures rely on older records that may not reflect how local communities change over time.
Creating a reliable method for annual ethnicity estimates would give public bodies more regular insights into local populations. Fresh demographic data can help local councils and health services allocate resources, plan school places, and arrange community services based on up-to-date local needs. Because this release is strictly a research publication, the ONS is still evaluating whether administrative data is accurate enough to replace or supplement standard statistical collections.
What the announcement does not tell us
The summary published by the ONS omits several key details about the research:
- The announcement does not name the specific administrative datasets that the team evaluated.
- It does not include any actual population figures, percentages, or demographic counts from the study.
- The ONS does not state how accurate the test results were when compared against the Census 2021 baseline.
- It does not provide a timeline for when these research methods might be adopted to produce official national statistics.
How this was written
This analysis was written with AI from the official announcement below, using only facts that announcement states. The quoted wording is UK Office for National Statistics’s own. Always check the original before acting on anything here.
Research into methods for producing annual population estimates by ethnic group and results from testing against Census 2021. This is a research publication and does not present official statistics.
Opens www.ons.gov.uk
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