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Official Statistics

National chlamydia screening programme (NCSP): annual data

Information on chlamydia testing and diagnoses in people aged 15 to 24 years in England.

Updates to this page

From:
UK Health Security Agency
Published:
17 June 2014
Last updated:
2 June 2026
Show all updates

  1. Updated with 2025 NCSP data, annual report, quality and methodology information report. Added links to the slide set and infographic.

  2. Updated with 2024 NCSP data, annual report, quality and methodology information report. Added links to the PRA lists, slide set and infographic.

  3. Added links to the 2023 slide set and infographic.

  4. 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.

  5. Added links to NCSP slide set 2022 and STI infographic 2022 under Details section.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. Added link to the 'NCSP slide set 2018' under Details section.

  11. 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.

  12. 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.

  13. 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.

  14. Added link to Sexual and Reproductive Health Profiles

  15. Updated with 2015 NCSP slide set in PowerPoint and PDF format.

  16. 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.

  17. Updated with NCSP annual data slide set 2014: no change to statistics.

  18. Updated with 2013 and 2014 NCSP data.

  19. First published.

Documents

Sexually transmitted infections and screening for chlamydia in England: 2025 report

https://www.gov.uk/government/statistics/sexually-transmitted-infections-stis-annual-data-tables

NCSP: chlamydia testing data in people aged 15 to 24 years in England, 2016 to 2025

ODS, 169 KB

This file is in an OpenDocument format

Sexual and Reproductive Health Profiles: chlamydia data by local authority

https://fingertips.phe.org.uk/profile/sexualhealth

Quality and methodology information for the sexually transmitted infections and National Chlamydia Screening Programme data release for England

https://www.gov.uk/government/statistics/sexually-transmitted-infections-stis-annual-data-tables

Details

Download NCSP slide set 2025 for presentational use.

Download STI and NCSP infographic 2025 for presentational use.

The UK Health Security Agency (UKHSA) collects data on all local authority commissioned chlamydia tests undertaken in England, to measure screening activity. This page includes information on trends in chlamydia diagnoses, as well as the numbers and rates of diagnoses by demographic characteristics and UKHSA public health region. Data is updated on an annual basis. Therefore numbers may differ from previous publications.

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.

View the pre-release access lists for these statistics.

Previous reports, data tables, slide sets, infographics, and pre-release access lists are available online:

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.

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