Detentions Under Section 135 and 136 of the Mental Health Act – Assessment Outcome
See what variables and values are shown in your table
| Variable | Visibility | Selected values | Action |
|---|---|---|---|
| Provider Health Board | Shown in table | All 8 values | Change values |
| Data Period Quarter | Shown in table | All 28 values | Change values |
| Data description | Shown in table | All 3 values | Change values |
| Assessment Outcome | Shown in table | All 5 values | Change values |
Table
| Data values | Data description | Provider Health Board | Data Period Quarter | Assessment Outcome |
|---|---|---|---|---|
| 95 | Total | Wales | Q1 2019-20 | Person agreed to go into hospital |
| 124 | Total | Wales | Q1 2019-20 | Person detained under the Mental Health Act and admitted to hospital |
| 298 | Total | Wales | Q1 2019-20 | Discharged from section with a community-based mental health plan of care |
| 106 | Total | Wales | Q1 2019-20 | Discharged from section – no mental health follow-up care needed |
| 10 | Total | Wales | Q1 2019-20 | Not recorded |
| 6 | Section 135 | Wales | Q1 2019-20 | Person detained under the Mental Health Act and admitted to hospital |
| 1 | Section 135 | Wales | Q1 2019-20 | Discharged from section with a community-based mental health plan of care |
| 1 | Section 135 | Wales | Q1 2019-20 | Not recorded |
| 95 | Section 136 | Wales | Q1 2019-20 | Person agreed to go into hospital |
| 118 | Section 136 | Wales | Q1 2019-20 | Person detained under the Mental Health Act and admitted to hospital |
| 297 | Section 136 | Wales | Q1 2019-20 | Discharged from section with a community-based mental health plan of care |
| 106 | Section 136 | Wales | Q1 2019-20 | Discharged from section – no mental health follow-up care needed |
| 9 | Section 136 | Wales | Q1 2019-20 | Not recorded |
| 107 | Total | Wales | Q2 2019-20 | Person agreed to go into hospital |
| 114 | Total | Wales | Q2 2019-20 | Person detained under the Mental Health Act and admitted to hospital |
| 258 | Total | Wales | Q2 2019-20 | Discharged from section with a community-based mental health plan of care |
| 104 | Total | Wales | Q2 2019-20 | Discharged from section – no mental health follow-up care needed |
| 6 | Total | Wales | Q2 2019-20 | Not recorded |
| 10 | Section 135 | Wales | Q2 2019-20 | Person detained under the Mental Health Act and admitted to hospital |
| 1 | Section 135 | Wales | Q2 2019-20 | Discharged from section with a community-based mental health plan of care |
| 107 | Section 136 | Wales | Q2 2019-20 | Person agreed to go into hospital |
| 104 | Section 136 | Wales | Q2 2019-20 | Person detained under the Mental Health Act and admitted to hospital |
| 257 | Section 136 | Wales | Q2 2019-20 | Discharged from section with a community-based mental health plan of care |
| 104 | Section 136 | Wales | Q2 2019-20 | Discharged from section – no mental health follow-up care needed |
| 6 | Section 136 | Wales | Q2 2019-20 | Not recorded |
Next update expected:27 August 2026
Updates
- 28th May 2026
New quarter added and revisions applied to previous data where applicable.
- 26th February 2026
New quarter added and revisions applied to previous data where applicable.
- 27th November 2025
- Dataset first published.
Main information
- Designation
- Management information
- Data provider
- Welsh Government
- Data source
- Removal of a suspected mentally disordered person to a place of safety (s.135 and s.136 Mental Health Act) data collection
- Time period covered
- April 2019 to March 2026
- Dataset ID
- e943659b-68d5-493b-8da3-e2458599ed14
Overview
- Summary of dataset and variables
Section 135 and Section 136 of the Mental Health Act 1983 give police officers lawful authority to take a person from a private dwelling (Section 135) or from a public place (Section 136) to a place of safety to enable an assessment of their mental health for the purpose of their own and/or the safety of others. This table provides quarterly data on the assessment outcome following a mental health assessment for those detained under Section 135 and Section 136 in each health board across Wales.
The table shows, for each assessment outcome:
- the number of Section 135 and Section 136 detentions
- Data collection or calculation
The NHS Wales Performance Division in Welsh Government receive quarterly Removal of a Suspected Mentally Disordered Person to a Place of Safety (s.135 and s.136 Mental Health Act 1983) reporting forms from each health board. Standards relating to the forms have been reviewed and passed by the Welsh Information Standards Board (WISB) and the Welsh Information Development Group (WIDG) (previously known as the Data Standards Change Notice Sub-group).
- Statistical quality
The NHS Wales Performance Division in Welsh Government upload the data received quarterly. The data processing system used ensures that data is not missing from the returns. Further validation and verification checks are then undertaken quarterly, including, for example, checking trends in the data and any significant drops in numbers. Any abnormalities in the data are noted and are raised with the relevant health board, thus enabling health board to check, correct or comment on their data and to provide contextual information where relevant.
If a data value previously published is found to be incorrect and subsequently is corrected or has been changed to improve accuracy, an r will be added to the relevant data value in the next publication.
Further information can be found in the related [Mental Health (Wales) Measure 2010: quality report] (https://www.gov.wales/detentions-under-section-135-and-136-mental-health-act-quality-report)
Published by
- Organisation
- Welsh Government
- Contact email
- hss.performance@gov.wales