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Released on: 29 July 2020
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Corporate Information
How we researched, developed and tested the Census 2021 questions on second address, migration and citizenship.
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Released on: 24 May 2019
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Methodology
An introduction to the main concepts that underpin Short-Term International Migration statistics for local authorities in England and Wales.
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Released on: 27 November 2025
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Methodology
Quality and Methodology Information for long-term international migration statistics, detailing the strengths and limitations of the data, methods used, and data uses and users.
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Released on: 09 January 2024
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Corporate Information
Research update on quantifying uncertainty in international migration estimates, and using expert judgement to quantify uncertainty in administrative estimates.
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Released on: 30 January 2020
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Corporate Information
Annual progress update on our transformation of population, migration and social statistics.
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Released on: 22 March 2018
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Methodology
Methods used in the revised mid-2012 to mid-2016 usual resident population estimates of England and Wales.
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Released on: 25 June 2021
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Methodology
Methodology guidance on national and subnational mid-year population estimates for the UK and its constituent countries, which are broken down by administrative area, age, sex and components of population change.
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Released on: 27 November 2025
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Methodology
Methodology used to produce our provisional long-term international migration estimates.
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Released on: 02 July 2020
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Methodology
Methodology guidance on national and subnational mid-year population estimates for the UK and its constituent countries, which are broken down by administrative area, age, sex and components of population change.
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Released on: 28 November 2019
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Methodology
Quality and methodology Information for Long-Term International Migration estimates, detailing the strengths and limitations of the data, methods used and data users and uses.
