Publication, Part of [MI] National Obesity Audit
National Obesity Audit, October 2025 - December 2025 [Management Information]
Other reports and statistics
Updates to CSDS provider tier list and HES refresh period
Please note, the stated HES refresh period in the Highlights section has been corrected from Q1 24/25 to Q1 25/26. The CSDS provider tier list has also been updated to only include providers that submitted data in the 12 month audit period.
6 July 2026 14:15 PM
Data submission summary
This page provides a summary of submissions to the HES and CSDS data sets. More detailed figures are available in the dashboards:
Data are presented in descending order with the most recent data period listed first.
Bariatric surgery
Count of patients having a primary bariatric surgical procedure (due to obesity)
| Data period | Count |
| Q3 2025/26 (provisional) | 1,672 |
| Q2 2025/26 (provisional) | 1,640 |
| Q1 2025/26 (provisional) | 1,648 |
| Q4 2024/25 (final) | 1,662 |
Count of providers with at least 1 primary bariatric surgical procedure (due to obesity)
| Data period | Count |
| Q3 2025/26 (provisional) | 49 |
| Q2 2025/26 (provisional) | 45 |
| Q1 2025/26 (provisional) | 47 |
| Q4 2024/25 (final) | 48 |
Weight management services
Count of providers submitting WMS data to CSDS
| Total | Tier 2 | Tier 3 | Both | |
| December 2025 | 37 | 8 | 27 | 2 |
| November 2025 | 36 | 8 | 26 | 2 |
| October 2025 | 38 | 9 | 27 | 2 |
Proportion of patients with at least 1 BMI recording (height and weight recorded simultaneously)
| Tier 2 | Tier 3 | Both | |
| December 2025 | 30.1 | 4.6 | 50.8 |
| November 2025 | 33.1 | 6.2 | 31.0 |
| October 2025 | 41.7 | 6.7 | 36.2 |
Proportion of patients with an NHS number submitted
| Tier 2 | Tier 3 | Both | |
| December 2025 | 41.6 | 100.0 | 47.6 |
| November 2025 |
51.1 |
100.0 | 69.0 |
| October 2025 | 34.2 | 99.8 | 68.1 |
Last edited: 6 July 2026 2:15 pm