ONS blog - Migration: The needle in the data haystack

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office for national statistics

ONS blog

23 July, 2025

Migration: The needle in the data haystack

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With migration continuing to make headlines in the media, a new episode of the Office for National Statistics’ (ONS) podcast Statistically Speaking unpacks what actually defines a migrant, and how the UK’s largest producer of official statistics goes about estimating them. It also sheds light on the misuse of migration figures.  

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