We are excited to introduce the new Harmony Meta platform, which we have developed over the past year. Harmony Meta connects many of the existing study catalogues and registers.
If you want to search for longitudinal studies that measured a particular variable such as “psychosis in adolescence” and you don’t know the exact wording that was used by the researchers, you can now use the AI search on Harmony Meta.
Try it here: https://harmonydata.ac.uk/search
Other examples of things you can search for
All of these will turn up studies that measured these values or approximate synonyms. If the researchers asked a question such as “difficulty reading”, your search for “dyslexia” will find it.
We have 5.5 million variables indexed. As far as I can tell, this is every large longitudinal study run in the UK ever, including well known studies such as the Millennium Cohort Study, the 1970 British Cohort Study, and Born in Bradford.
Harmony Meta works with a vector index so all 5.5 million variables are converted to vectors using a large language model.
Investigators on this project were Bettina Moltrecht and Eoin McElroy. Rachel Holland Gomes worked on the UI, John Rogers on the front end, Thomas Wood (Fast Data Science) on the back end, with Jay Dugad working on community management.
Harmony Meta was funded by ESRC, the Economic and Social Research Council. We would like to acknowledge partners Population Research UK (PRUK), UCL Centre for Longitudinal Studies, DATAMIND UK, The Alan Turing Institute, National Centre for Research Methods, UK Research and Innovation, Wellcome Trust, National Centre for Social Research, and Social Finance.
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No part of this blog post constitutes legal advice. A common question that came up at the two expert witness conferences which I attended in 2026, was
There are a number of unresolved questions around when and how AI can be used in court documents. A variety of cases have been reported where litigants in person, advocates, or expert witnesses have been admonished or penalised by the courts for undeclared or inappropriate use of AI. In this post, I will focus on AI use in England and Wales, although I have covered some other jurisdictions in an earlier blog post on the topic.
Thomas Wood, director of Fast Data Science, appeared today as a panelist at the Bond Solon Expert Witness Conference on 6 November 2026 at Church House, Westminster in London. This follows Thomas’s appearance at the Ireland’s Expert Witness Conference on 20 May 2026.
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