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Mary Gregory @marygregory.bsky.social · 13/03/2026

Really enjoyed visiting King Edward’s this week - some amazing students with brilliant questions and insights.

Mary Gregory @marygregory.bsky.social · 18/11/2025

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...

ons.gov.uk

What is international migration and how do we estimate it? - Office for National Statistics

Estimating our population is complex. Find out what our migration statistics cover and how our methods are adapting to world events and changing trends

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Mary Gregory @marygregory.bsky.social · 18/11/2025

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. 👇

blog.ons.gov.uk

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

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Mary Gregory @marygregory.bsky.social · 07/11/2025

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

ons.gov.uk

Quarterly update on population and migration statistics - Office for National Statistics

Latest article on improvements to how we estimate UK population and migration, providing an update on our progress and plans.

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Mary Gregory @marygregory.bsky.social · 28/10/2025

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...

consultations.ons.gov.uk

Government Statistical Service Harmonisation: Consultation on user needs for additional response options in a future ethnicity standard - Office for National Statistics...

Find and participate in consultations run by the Office for National Statistics

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Mary Gregory @marygregory.bsky.social · 28/10/2025

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

eventbrite.co.uk

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.

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Mary Gregory @marygregory.bsky.social · 28/10/2025

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...

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

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Mary Gregory @marygregory.bsky.social · 28/10/2025

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.

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Mary Gregory @marygregory.bsky.social · 17/06/2025

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.

uksa.statisticsauthority.gov.uk

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

Statistics for the Public Good

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Mary Gregory @marygregory.bsky.social · 15/05/2025

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...

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Mary Gregory @marygregory.bsky.social · 26/04/2025

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!

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Mary Gregory @marygregory.bsky.social · 15/03/2025

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!

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Mary Gregory @marygregory.bsky.social · 07/03/2025

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-...

blog.ons.gov.uk

Mary Gregory | National Statistical

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Mary Gregory @marygregory.bsky.social · 28/02/2025

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!

blog.ons.gov.uk

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

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Mary Gregory @marygregory.bsky.social · 12/02/2025

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!

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Mary Gregory @marygregory.bsky.social · 31/01/2025

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...

uksa.statisticsauthority.gov.uk

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 ...

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Mary Gregory @marygregory.bsky.social · 31/01/2025

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...

ons.gov.uk

Criteria for moving to admin-based population estimates as official estimates of population - Office for National Statistics

The criteria for acceptance of the admin-based population estimates (ABPEs) as the official estimates of the population.

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Mary Gregory @marygregory.bsky.social · 31/01/2025

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...

ons.gov.uk

Quarterly update on population and migration statistics - Office for National Statistics

Improvements to how we estimate UK population and migration, providing an update on our progress and plans.

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Mary Gregory @marygregory.bsky.social · 28/01/2025

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...

blog.ons.gov.uk

National population projections: past, present and future | National Statistical

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Mary Gregory @marygregory.bsky.social · 08/01/2025

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...

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Mary Gregory @marygregory.bsky.social · 30/12/2024

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! 14/14

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Mary Gregory @marygregory.bsky.social · 30/12/2024

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! 👇 13/14

ons.gov.uk

How is the fertility rate changing in England and Wales? - Office for National Statistics

How births and the fertility rate has changed in England and Wales

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Mary Gregory @marygregory.bsky.social · 30/12/2024

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. 12/14

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Mary Gregory @marygregory.bsky.social · 30/12/2024

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. 👇 11/14

analysisfunction.civilservice.gov.uk

Government Statistical Service (GSS) Fast Stream – Government Analysis Function

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Mary Gregory @marygregory.bsky.social · 30/12/2024

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! 10/14

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Mary Gregory @marygregory.bsky.social · 30/12/2024

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

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Mary Gregory @marygregory.bsky.social · 30/12/2024

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. 8/14

blog.ons.gov.uk

Our population is changing and so is the way we measure it | National Statistical

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Mary Gregory @marygregory.bsky.social · 30/12/2024

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! 👏 7/14

rss.org.uk

Campion Award for Excellence in Official Statistics: 2024 winners

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Mary Gregory @marygregory.bsky.social · 30/12/2024

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 👇) 6/14

ons.gov.uk

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Mary Gregory @marygregory.bsky.social · 30/12/2024

During the spring we published some of our (relatively) less high profile but still hugely insightful publications. One of these was Milestones: journeying through modern life. See how much things have changed over time! 4/14

ons.gov.uk

Milestones: journeying through modern life - Office for National Statistics

Article exploring the age by which we hit key life milestones, and how that has changed over time

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Mary Gregory @marygregory.bsky.social · 30/12/2024

In February our collaboration with @microbit.org and BBC was launched. We shared what it means to be a data scientist and engaged primary school children with data collection and analysis. You can see more - including what we found out - in my blog 👇 3/14

blog.ons.gov.uk

Inspiring the Next Generation Through Playground Data

Following a collaboration with the BBC and Micro:bit Foundation ONS Director, Mary Gregory, shares how the results of a playground survey are only the start of the journey for the next generation of b

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Mary Gregory @marygregory.bsky.social · 30/12/2024

In January the Office for National Statistics published interim national population projections. These are really important to inform fiscal events and service delivery. Our next set, including variants, will be published at 9:30am on 28th January 2025. 2/14

ons.gov.uk

Population projections - Office for National Statistics

Projections of the future size and age structure of the population of the UK and its constituent countries. Based on mid-year population estimates and assumptions of future fertility, mortality and mi...

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Mary Gregory @marygregory.bsky.social · 30/12/2024

Being new to Bluesky I thought I’d end the year with a summary of activity from 2024. Hope you enjoy seeing what we have been up to and I look forward to seeing what 2025 brings! 1/14

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Mary Gregory @marygregory.bsky.social · 23/12/2024

Hello! 👋 Great to see you here! I’ll be mostly talking about data and statistics!

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