Mary Gregory

We've also published a new article looking at what long-term international migration is, and how we produce estimates that are as timely and accurate as possible. Worth a read if you want to know more about these estimates.
www.ons.gov.uk/peoplepopula...

Updating our methods to improve EU and British migration statistics For the first time, UK long-term international migration statistics no longer rely on survey data but are, instead, produced using administrative data. While this is a landmark moment and gives us an

Ahead of publication of the latest international migration estimates on 27th November, we've published an update.

UK long-term international migration statistics no longer rely on survey data but are, instead, produced using administrative data. Take a look at the blog to see more. 👇

We've published our latest update on population and migration statistics, take a look via the link here! 👇https://www.ons.gov.uk/peoplepopulationandcommunity/populationandmigration/populationestimates/articles/quarterlyupdateonpopulationandmigrationstatistics/november2025

The UK-wide GSS ethnicity harmonisation consultation is also now open.

It is inviting views on how ethnicity data is collected across government to improve quality and consistency of ethnicity data.

The consultation is open until 4 February 2026: consultations.ons.gov.uk/harmonisatio...

Introduction to the Census 2031 Topic consultation A webinar to find out more about the England and Wales Census 2031 topic consultation run by the Office for National Statistics.

Join one of our upcoming webinars to learn what’s involved in the consultation and why it’s important people take part eventbrite.co.uk/e/introducti...

You can also email us at census2031.engagement@ons.gov.uk

Purple image with text "Census 2032 topic consultation", "Help shape important data topics for the next census" and images of people.

Help shape the topics we collect data on in the next census. The England and Wales Census 2031 topic consultation is open from today to 4 February 2026: consultations.ons.gov.uk/census/censu...

Today sees the launch of the Office for National Statistics Census 2031 Topic Consultation and Government Statistical Service Ethnicity Harmonisation Consultation. Take a look at the 🧵👇for information on both. Please share with your networks.

Recommendation from the UK Statistics Authority on the future of population and migration statistics in England and Wales Statistics for the Public Good

Today the UK Statistics Authority has recommended Government commissions a census of England and Wales in 2031.

Subject to Government approval, along side growing use of administrative data this will support a system of population & migration statistics which best meets the needs of users.

What’s driving the fall in net migration? Following policy changes, there was a record fall in net migration in 2024. With fewer people arriving on work and study-related visas and emigration returning to pre-pandemic levels, net migration is

Latest ONS data shows long-term international migration falling by nearly half since a year earlier.

Take a look at my blog to find out more about what’s driving this and our future plans👇

Take a look at this really important role in the Office for National Statistics, including leading on international migration estimates. Deadline Tuesday 3rd June. Locations Newport, Titchfield (Fareham), Manchester & Darlington.

Please share!

www.civilservicejobs.service.gov.uk/csr/index.cg...

Another enjoyable morning at the @ri-science.bsky.social Y5 Maths Masterclass. It’s such a brilliant scheme with impressive participants! It’s been fun doing the @royalstatsoc.bsky.social William Guy Lecture as a workshop, demonstrating the importance of maths and statistics in our everyday lives!

Had a really enjoyable morning @ri-science.bsky.social doing an extended workshop version of my @royalstatsoc.bsky.social William Guy Lecture. It’s a great way to finish my activities for #BritishScienceWeek!

We’re celebrating the start of British Science Week!

There is brilliant stuff going on at ONS including the partnership with BBC and @microbit.org some amazing ONS STEM Ambassadors, and lots of STEM related apprentices! I cannot do it justice here, so read the blog!
blog.ons.gov.uk/author/mary-...

Working to improve estimates of EU and British international migration Since accelerating the move from travel survey findings to administrative data gathered by government bodies, the Office for National Statistics (ONS) has been continuously improving the way it estima

This week we published information on methods development for migration, and proposed publication schedule and revisions for population and migration. blog.ons.gov.uk/2025/02/26/w....

If you have any feedback to support our continuous improvement please do get in touch via pop.info@ons.gov.uk!

This is a brilliant initiative and I’ve been so impressed with all the children I’ve spoken to so far! They have had brilliant questions and it’s been a lot of fun. So if you’re thinking about applying just go for it!

Vacancy: Advisory Panel on Migration Statistics Chair The closing date for applications is 26th February 2024 at 23:55pm About the Advisory Panel on Migration Statistics Understanding International migration is fundamental to our understanding of the UK ...

UKSA is recruiting for a chair for the National Statistician’s advisory panel on migration statistics. Take a look at the UKSA website for more info! Closing date for applications is 26th February. uksa.statisticsauthority.gov.uk/news/vacancy...

Alongside this, we have also published information on our criteria for assessment of our readiness to move to admin-based population estimates as our official estimates: www.ons.gov.uk/peoplepopula...

We’ve just published our latest quarterly update so you can see more about our plans for population and migration statistics outputs: www.ons.gov.uk/peoplepopula...

Today the Office for National Statistics published the latest UK population projections. Take a look at this blog to find out more, including information on variant projections and a link to our new interactive tool: blog.ons.gov.uk/2025/01/28/n...

I really enjoyed my first RSS William Guy Lecture talk for 2025, delivered online this morning!

If you work with primary school age children and are interested in the talk please get in touch!

There is an online version and more information here:
rss.org.uk/policy-campa...

It’s been a privilege to work on such important areas during 2024, and I can’t wait for what’s to come in 2025!

So I’ll finish by wishing everyone a healthy and happy 2025!

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We’ve also had a range of publications, including estimates of the very old (www.ons.gov.uk/peoplepopula...) and an explainer “How is the fertility rate changing?” - well worth a read! 👇
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The autumn has also seen a focus on work underpinning our admin based population estimates. We’ve been engaging with Local Authorities to get their feedback and working to make the production process more sustainable.
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Autumn also saw my cohort of the GSS Fast Stream move from their first postings. It’s been brilliant to get a small insight into the experiences and enthusiasm of these individuals. I also shared this blog, inspired by questions from this cohort. 👇
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September was a busy month for conferences! With the @royalstatsoc.bsky.social and @bspsuk.bsky.social conferences and the International Census Forum. It was great to share what we are doing and hear more from others across the UK and beyond!

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In August the @royalstatsoc.bsky.social shared the William Guy Lecture videos. rss.org.uk/policy-campa.... This is a fantastic way to share statistics in the real world with school age children. I’m really looking forward to visiting primary schools in 2025 to do my talk in person! 9/14

In July, we published 2023 mid-year population estimates. Alongside these we published more information on our admin-based population estimates (ABPEs), this represents a huge step forward in our plans to make greater use of administrative data.

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Campion Award for Excellence in Official Statistics: 2024 winners

The summer brought a chance to celebrate the team, with the collaboration on the Refugees Integration Outcome Cohort Study being highly commended in the @royalstatsoc.bsky.social awards for excellence in official statistics. As well as celebrating ONS winners! 👏

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May, was a busy month, with our Long Term International Migration estimates and the first of our new quarterly updates giving people more information on what they can except to see from us (latest updates from October linked 👇)

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Followed closely by Families and households in the UK.

In 2023 there were 19.5 million families in the UK, an increase of just over 1.1 million families since 2013.

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