Posts by Mary Gregory

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 improved picture of past migration patterns, using admin data can present fresh challenges, as Mary Gregory explains.

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What’s driving the fall in net migration?

Arrivals to a UK airport at border control

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 at the lowest level seen since 2021. Mary Gregory looks in more detail at the latest estimates and considers the impact of falling migration on wider ONS statistics.

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Working to improve estimates of EU and British international migration

Arrivals to a UK airport at border control

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 estimates long term international migration. This transformation and continued development of methods has contributed to the revisions seen in recent times. Here Mary Gregory updates on the latest work to provide a more detailed picture of EU and British international migration.

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