Detentions Under Section 135 and 136 of the Mental Health Act – Age and Gender

Data values	Data description	Provider Health Board	Data Period Quarter	Age	Gender
7	Total	Wales	Q1 2019-20	under 16 years	Female
3	Total	Wales	Q1 2019-20	under 16 years	Male
13	Total	Wales	Q1 2019-20	16-17 years	Female
8	Total	Wales	Q1 2019-20	16-17 years	Male
222	Total	Wales	Q1 2019-20	18 and over years	Female
327	Total	Wales	Q1 2019-20	18 and over years	Male
1	Total	Wales	Q1 2019-20	18 and over years	Other
24	Total	Wales	Q1 2019-20	Not recorded	Female
27	Total	Wales	Q1 2019-20	Not recorded	Male
1	Total	Wales	Q1 2019-20	Not recorded	Not Recorded
11	Total	Wales	Q2 2019-20	under 16 years	Female
2	Total	Wales	Q2 2019-20	under 16 years	Male
7	Total	Wales	Q2 2019-20	16-17 years	Female
9	Total	Wales	Q2 2019-20	16-17 years	Male
218	Total	Wales	Q2 2019-20	18 and over years	Female
336	Total	Wales	Q2 2019-20	18 and over years	Male
2	Total	Wales	Q2 2019-20	Not recorded	Female
4	Total	Wales	Q2 2019-20	Not recorded	Male
5	Total	Wales	Q3 2019-20	under 16 years	Female
2	Total	Wales	Q3 2019-20	under 16 years	Male
10	Total	Wales	Q3 2019-20	16-17 years	Female
6	Total	Wales	Q3 2019-20	16-17 years	Male
162	Total	Wales	Q3 2019-20	18 and over years	Female
290	Total	Wales	Q3 2019-20	18 and over years	Male
2	Total	Wales	Q3 2019-20	18 and over years	Other
1	Total	Wales	Q3 2019-20	18 and over years	Not Recorded
2	Total	Wales	Q3 2019-20	Not recorded	Female
3	Total	Wales	Q3 2019-20	Not recorded	Male
5	Total	Wales	Q4 2019-20	under 16 years	Female
2	Total	Wales	Q4 2019-20	under 16 years	Male
3	Total	Wales	Q4 2019-20	16-17 years	Female
9	Total	Wales	Q4 2019-20	16-17 years	Male
165	Total	Wales	Q4 2019-20	18 and over years	Female
267	Total	Wales	Q4 2019-20	18 and over years	Male
1	Total	Wales	Q4 2019-20	18 and over years	Other
7	Total	Wales	Q1 2020-21	under 16 years	Female
2	Total	Wales	Q1 2020-21	under 16 years	Male
7	Total	Wales	Q1 2020-21	16-17 years	Female
6	Total	Wales	Q1 2020-21	16-17 years	Male
157	Total	Wales	Q1 2020-21	18 and over years	Female
177	Total	Wales	Q1 2020-21	18 and over years	Male
3	Total	Wales	Q1 2020-21	18 and over years	Other
1	Total	Wales	Q1 2020-21	Not recorded	Not Recorded
10	Total	Wales	Q2 2020-21	under 16 years	Female
2	Total	Wales	Q2 2020-21	under 16 years	Male
16	Total	Wales	Q2 2020-21	16-17 years	Female
10	Total	Wales	Q2 2020-21	16-17 years	Male
211	Total	Wales	Q2 2020-21	18 and over years	Female
261	Total	Wales	Q2 2020-21	18 and over years	Male
1	Total	Wales	Q2 2020-21	18 and over years	Other
1	Total	Wales	Q3 2020-21	under 16 years	Female
1	Total	Wales	Q3 2020-21	under 16 years	Male
19	Total	Wales	Q3 2020-21	16-17 years	Female
12	Total	Wales	Q3 2020-21	16-17 years	Male
139	Total	Wales	Q3 2020-21	18 and over years	Female
209	Total	Wales	Q3 2020-21	18 and over years	Male
3	Total	Wales	Q4 2020-21	under 16 years	Female
13	Total	Wales	Q4 2020-21	16-17 years	Female
9	Total	Wales	Q4 2020-21	16-17 years	Male
223	Total	Wales	Q4 2020-21	18 and over years	Female
210	Total	Wales	Q4 2020-21	18 and over years	Male
16	Total	Wales	Q1 2021-22	under 16 years	Female
7	Total	Wales	Q1 2021-22	under 16 years	Male
26	Total	Wales	Q1 2021-22	16-17 years	Female
5	Total	Wales	Q1 2021-22	16-17 years	Male
245	Total	Wales	Q1 2021-22	18 and over years	Female
297	Total	Wales	Q1 2021-22	18 and over years	Male
1	Total	Wales	Q1 2021-22	18 and over years	Other
4	Total	Wales	Q2 2021-22	under 16 years	Female
3	Total	Wales	Q2 2021-22	under 16 years	Male
21	Total	Wales	Q2 2021-22	16-17 years	Female
6	Total	Wales	Q2 2021-22	16-17 years	Male
221	Total	Wales	Q2 2021-22	18 and over years	Female
258	Total	Wales	Q2 2021-22	18 and over years	Male
1	Total	Wales	Q2 2021-22	18 and over years	Other
8	Total	Wales	Q3 2021-22	under 16 years	Female
3	Total	Wales	Q3 2021-22	under 16 years	Male
17	Total	Wales	Q3 2021-22	16-17 years	Female
2	Total	Wales	Q3 2021-22	16-17 years	Male
215	Total	Wales	Q3 2021-22	18 and over years	Female
227	Total	Wales	Q3 2021-22	18 and over years	Male
1	Total	Wales	Q3 2021-22	18 and over years	Other
8	Total	Wales	Q4 2021-22	under 16 years	Female
2	Total	Wales	Q4 2021-22	under 16 years	Male
18	Total	Wales	Q4 2021-22	16-17 years	Female
2	Total	Wales	Q4 2021-22	16-17 years	Male
224	Total	Wales	Q4 2021-22	18 and over years	Female
208	Total	Wales	Q4 2021-22	18 and over years	Male
8	Total	Wales	Q1 2022-23	under 16 years	Female
3	Total	Wales	Q1 2022-23	under 16 years	Male
32	Total	Wales	Q1 2022-23	16-17 years	Female
6	Total	Wales	Q1 2022-23	16-17 years	Male
212	Total	Wales	Q1 2022-23	18 and over years	Female
256	Total	Wales	Q1 2022-23	18 and over years	Male
7	Total	Wales	Q2 2022-23	under 16 years	Female
1	Total	Wales	Q2 2022-23	under 16 years	Male
24	Total	Wales	Q2 2022-23	16-17 years	Female
9	Total	Wales	Q2 2022-23	16-17 years	Male
269	Total	Wales	Q2 2022-23	18 and over years	Female
268	Total	Wales	Q2 2022-23	18 and over years	Male

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Next update expected:26 February 2026

Updates

• 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 September 2025

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 age and gender of those detained under Section 135 and Section 136 in each health board across Wales.

  The table shows, for each age group and gender category:

  • the number of Section 135 and Section 136 detentions

  The age of a person detained is their age on the day when the warrant allowing the police to enter a person’s home is executed (Section 135) or the police encountered the person (Section 136). The gender of a person detained is classified according to the gender that person considers themselves to be. If a person is not able or willing to state their gender, then they are recorded according to the last available classification, for example during a previous hospital admission or details available from their GP.

• 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)

• Related reports:
  • Detentions under Section 135 and 136 of the Mental Health Act Statistical Release
  • Detentions under Section 135 and 136 of the Mental Health Act: Quality Report

Published by

• Organisation: Welsh Government
• Contact email: hss.performance@gov.wales

Metadata

The metadata for this dataset is not included when you download the data. You can download this separately. This contains all the information from the 'About this dataset' tab.