Mental Health Act 2025: stages, votes and documents
The Mental Health Act 2025 received Royal Assent on 18 December 2025, 407 days after its first reading in the House of Lords on 6 November 2024. MPs divided on it 3 times between 14 October 2025 and 14 October 2025; the narrowest margin was 169 (Amendment 41).
Stages taken place
16
Commons divisions
3
Documents listed
20
Royal Assent
18 December 2025
What the bill is for
The long title reads:
A Bill to make provision to amend the Mental Health Act 1983 in relation to mentally disordered persons; and for connected purposes.
Sponsors
- Baroness Merron (Labour, Lords), Department of Health and Social Care
- Wes Streeting (Labour, Commons), Department of Health and Social Care
Stages
| Stage | House | Sittings |
|---|---|---|
| 1st reading | Lords | 6 November 2024 |
| 2nd reading | Lords | 25 November 2024 |
| Committee stage | Lords | 14 January 2025, 20 January 2025, 22 January 2025, 27 January 2025, 24 February 2025 |
| Report stage | Lords | 31 March 2025, 2 April 2025 |
| 3rd reading | Lords | 23 April 2025 |
| 1st reading | Commons | 24 April 2025 |
| 2nd reading | Commons | 19 May 2025 |
| Programme motion | Commons | 19 May 2025 |
| Money resolution | Commons | 19 May 2025 |
| Committee stage | Commons | 10 June 2025, 12 June 2025, 17 June 2025, 19 June 2025, 24 June 2025 |
| Report stage | Commons | 14 October 2025 |
| 3rd reading | Commons | 14 October 2025 |
| Consideration of Commons amendments and / or reasons | Lords | 24 November 2025 |
| Programme motion | Commons | 8 December 2025 |
| Consideration of Lords message | Commons | 8 December 2025 |
| Royal Assent | Unassigned | 18 December 2025 |
Commons divisions on this bill
| Date | Division | Ayes | Noes |
|---|---|---|---|
| 14 October 2025 | Mental Health Bill Report Stage New Clause 26 | 78 | 327 |
| 14 October 2025 | Mental Health Bill Report Stage: Amendment 40 | 163 | 339 |
| 14 October 2025 | Mental Health Bill Report Stage: Amendment 41 | 164 | 333 |
Documents
Act of Parliament
- Mental Health Act 2025 (c. 33) 18 December 2025
Bill
- 5901047.pdf · 5901047.html 6 November 2024
- 5901073.pdf · 5901073.html · 5901073.xml 24 February 2025
- 5901093.pdf · 5901093.html · 5901093.xml 2 April 2025
- Bill 225 2024-25 (as brought from the House of Lords) 24 April 2025
- Bill 272 2024-25 (as amended in Public Bill Committee) 25 June 2025
- 5901137.pdf 15 October 2025
- Bill 337 2024-26 Lords Non-Insistence, and Amendments in Lieu 25 November 2025
Explanatory Notes
- HL Bill 47 Explanatory Notes · 5901047en.pdf 6 November 2024
- Bill 225 EN 2024-25 24 April 2025
- HL Bill 137 Explanatory Notes · 5901137en.pdf 15 October 2025
Impact Assessments
- Mental Health Bill Impact Assessment November 2024.pdf 6 November 2024
Delegated Powers Memorandum
- MentalHealthBillDPM.pdf 7 November 2024
Briefing papers
- Mental Health Act Reform – Race and Ethnic Inequalities 19 May 2022
- Mental Health Act Reform – Children and Young People 3 November 2022
- Reforming the Mental Health Act – Approaches to Improve Patient Choice 11 May 2023
- Mental Health Act reform – impacts on autistic people and people with a learning disability 8 July 2024
- Mental Health Bill [HL]: HL Bill 47 18 November 2024
- Mental Health Bill [HL] 2024-25 14 May 2025
- Mental Health Bill [HL] 2024-25: progress of the bill 1 August 2025
Official record
Sources
| Record | Read | SHA-256 |
|---|---|---|
| Bills API: bill | 25 October 2026 | 06fac4df2bb94217… |
| Bills API: stages | 25 October 2026 | e1b431f4f0badcbf… |
| Bills API: publications | 15 October 2026 | 327a23149baf8121… |