National chlamydia screening programme (NCSP): annual data
Information on chlamydia testing and diagnoses in 15 to 24 year olds in England by demographic characteristics and geographical region.
Documents
Details
Download NCSP slide set 2023 for presentational use.
Download STI and NCSP infographic 2023 for presentational use.
UK Health Security Agency (UKHSA) collect data on all NHS and local authority commissioned chlamydia tests undertaken in England, to measure screening activity.
The data provides information on the:
- trends in testing coverage
- proportion of tests that are positive
- detection rate
Figures by various demographic characteristics and by geographical distribution are also included.
Data at lower and upper tier local authority is available from the Sexual and Reproductive Health Profiles.
Previously published NCSP data tables and outputs are available from the UK Government Web Archive.
Our statistical practice is regulated by the Office for Statistics Regulation (OSR). The OSR sets the standards of trustworthiness, quality and value in the Code of Practice for Statistics that all producers of Official Statistics should adhere to.
Updates to this page
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Added links to the 2023 slide set and infographic.
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Updated with 2023 NCSP data, link to annual report, quality and methodology information and pre-release access list. Previously published data revised to reflect resubmissions and improvements to data cleaning.
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Added links to NCSP slide set 2022 and STI infographic 2022 under Details section.
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Updated with 2022 NCSP data, link to annual report and pre-release access list. Previously published data revised to reflect resubmissions and improvements to data cleaning.
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Updated with 2021 NCSP data; link to annual report; pre-release access list; and added links to infographic and slide set. Previously published data revised to reflect resubmissions and improvements to data cleaning.
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Updated with 2020 NCSP data; link to annual report; pre-release access list; and added links to infographic and slide set. Revised previously published data to reflect resubmissions and improvements to data cleaning.
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Updated with 2019 NCSP data; annual report; pre-release access list; and added links to infographic and slide set. Revised 2018 data to reflect resubmissions and improvements to data cleaning.
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Added link to the 'NCSP slide set 2018' under Details section.
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Updated with 2018 NCSP data, health protection report, pre-release access list, and added infographic in details section. Revised previously published data to reflect resubmissions and improvements to data cleaning.
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Updated with 2017 NCSP data; health protection report; pre-release access list; and added links to the slide set and infographic under Details section. Revised previously published 2016 data to reflect resubmissions and improvements to data cleaning. Therefore, data may differ from previous publications.
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Updated with 2016 NCSP data; health protection report; slide set. Revised previously published 2015 data to reflect resubmissions and improvements to data cleaning. Therefore, data may differ from previous publications.
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Added link to Sexual and Reproductive Health Profiles
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Updated with 2015 NCSP slide set in PowerPoint and PDF format.
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Updated with 2015 NCSP data and revised previously published data to reflect clinic and laboratory resubmissions and improvements to data cleaning. Therefore, data may differ from previous publications.
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Updated with NCSP annual data slide set 2014: no change to statistics.
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Updated with 2013 and 2014 NCSP data.
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First published.