Ministry of Justice: Data First
Data First is an ambitious data-linking programme led by the Ministry of Justice and funded by ADR UK.
Data First aims to unlock the potential of the wealth of data already created by the Ministry of Justice (MOJ), by linking administrative datasets from across the justice system and enabling accredited researchers, from within government and academia, to access the data in an ethical and responsible way. The project will also enhance the linking of justice data with other government departments.
By working in partnership with academic experts to facilitate and promote research in the justice space, Data First will create a sustainable body of knowledge on justice system users, their interactions across the criminal, family and civil courts and their needs, pathways and outcomes across a range of public services.
This will provide greater insight to inform the development of MOJ policies and drive real progress in improving social and justice outcomes.
The programme is led by MOJ and funded by ADR UK (Administrative Data Research UK), an investment by the Economic Social and Research Council (ESRC).
General project information
Datasets
Analytical outputs
Application form
Last updated
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Analytical outputs section added.
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User guide updated and Data First probation data catalogue, Data First criminal courts, prisons and probation linking data catalogue published.
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User guide updated and Data First Family Court data catalogue published.
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User guide, privacy statement, Data First magistrates' court defendant data catalogue, Data First Crown Court defendant data catalogue and Data First criminal courts and prisons linking data catalogue updated.
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User guide updated and Data First prisoner custodial journey data catalogue published.
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User guide updated and Data First linked magistrates’ and Crown Court data catalogue published.
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Documents updated and Data First Crown Court defendant data catalogue published.
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First published.
Update history
2025-05-29 15:07
User Guide amended to include updated list of software available to ONS SRS users.
2025-04-30 16:17
Additional Data First analytical output added: “A Profile of Repeat Offending by Children and Young People in England and Wales”
2024-09-17 14:46
An explanatory note has been added to two variables in the prisoner custodial journey data catalogue. An additional minor change has been made to correct a typing error identified in the User Guide.
2024-07-30 14:04
Added ‘Data First research bulletin July 2024’ to analytical outputs section.
2024-07-22 16:18
Updated Family Court and Cross-Justice Linking data catalogues have been added, along with an updated User Guide
2024-06-28 14:26
An additional section, ‘Limitations of data linking’, has been added to the main text.
2024-06-10 14:54
Updated magistrates’ courts data catalogue added. Outdated criminal courts and prisons linking data catalogue removed.
2024-05-20 10:30
Updating data catalogues for magistrates’ courts, Crown Court, prisoner custodial journey and probation datasets.
2024-05-10 10:31
General user information has been updated to reflect new datasets and linkages. Updates to the User Guide and data catalogues will follow. The order of sections of the document has changed. New contact information has been added.
2022-10-14 13:08
Splink information added.
2022-08-30 15:42
Data First Family Court data catalogue updated.
2022-08-15 10:40
Data First prisoner custodial journey data catalogue updated.
2022-03-18 12:33
Analytical outputs section added.
2022-02-22 08:26
User guide updated and Data First probation data catalogue, Data First criminal courts, prisons and probation linking data catalogue published.