This website brings together around 5800 Medical Officer of Health (MOH) reports from
the Greater London area. This includes the present-day City of London, 32 London
boroughs and the predecessor local authorities for these boroughs, including urban and
rural district councils and sanitary districts.
We have made every effort to digitise all of the London MOH reports from the Wellcome
Library’s collections, though some gaps inevitably remain, either because the report is
missing or was never produced at the time. We are grateful to
London Metropolitan Archives
who contributed nearly 600 reports to fill the gaps in the Wellcome Library’s holdings.
The reports have been photographed cover-to-cover and turned into text using Optical
Character Recognition (OCR). Although the OCR has been done to a high degree of accuracy,
errors may exist, particularly where text in the original document is faint, blurry, or
lost in the gutter of a tight binding.
Along with the full text, around 275 000 tables have been extracted from the reports as
individual files (downloadable as text, HTML, XML and CSV). A small number of tables
(approximately 2%) could not be extracted in this way because either the
data occurred within the narrative text, without a tabular format, or the
table lacked a clear description, heading or caption. The extracted tables have
undergone extensive quality assurance checks, but due to the volume of the data, we
cannot promise 100% accuracy. Where there is any doubt about the accuracy of the data,
the extracted tables can be directly compared to their corresponding page images on the
The London MOH data is free to download and reuse under a
Creative Commons license (CC-BY 4.0).
You can download the data for specific boroughs and time periods, as well as data for
individual reports, by using the browse and search functions on the website.
Downloading 100+ reports
When your search results in 100 reports or more, or you need the full corpus for
text-mining and data analysis, we recommend using the download options below. All
tables and the full text are available as .ZIP files.
Full text corpus
(raw text) [215 MB]
All report tables as CSV
All report tables as HTML
All report tables as XML
All report tables as TXT
We will continue to add data over time as we fill gaps in our holdings or
include additional digitised MOH reports.
- Are you using the MOH reports for your research?
- Have you used the MOH data
to build a website or app?
- Do you have any data visualisation or mapping
projects on the go?
Let us know! We are keen to share examples of creative, innovative and academic work
with the research community.
We’d also love to know about your experience using the London Medical Officer of Health
reports online. Any feedback you contribute will help us to improve the website,
making London’s Pulse a more valuable research resource for all.
Please get in touch:
Twitter: @WellcomeLibrary / #mohreports / #londonspulse