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Section 2: Admission for Assessment

Mental HealthEngland & WalesLast reviewed: 1 April 20256 min

Section 2 of the Mental Health Act 1983 allows a person to be admitted to hospital and detained for up to 28 days for assessment of their mental disorder (or assessment followed by treatment). It is used when clinicians need to assess the nature and degree of a person's disorder before deciding on a longer-term plan. It requires an application by an AMHP and two medical recommendations.

Important

Mental Health Act content is complex — always seek qualified legal advice or contact Rethink Mental Illness (0808 801 0525) or Mind (0300 123 3393). The Mental Health Bill 2025 is currently progressing through Parliament and proposes significant changes including reformed detention criteria for people with personality disorders and learning disabilities, advance choice documents, and changes to nearest relative provisions. Always check the latest position before acting.

Key points

  • Section 2 detention lasts a maximum of 28 days and cannot be renewed — it must convert to Section 3 or discharge.
  • Two medical recommendations are required (one from an approved Section 12 doctor) plus an AMHP application.
  • Grounds for Section 2: mental disorder of a nature or degree warranting detention, and detention necessary for health or safety or protection of others.
  • The nearest relative must be informed as soon as practicable and can apply to discharge the patient.
  • Patients can appeal to a Mental Health Tribunal within the first 14 days of Section 2 detention.

The Criteria for Section 2 Detention

For Section 2 to apply, an Approved Mental Health Professional must be satisfied that all of the following criteria are met:

  1. The patient is suffering from a mental disorder of a nature or degree that warrants detention in a hospital for assessment (or assessment followed by medical treatment) for at least a limited period.
  2. Detention is necessary in the interests of the patient's own health or safety, or for the protection of other persons.

The AMHP must also consider alternatives to admission — informal admission, crisis resolution home treatment, or other community services — and satisfy themselves that these are not appropriate or available in the circumstances.

"Mental disorder" is broadly defined under the MHA 2007 as "any disorder or disability of the mind" — this includes conditions such as depression, schizophrenia, bipolar disorder, personality disorders, dementia, and eating disorders.

The Section 2 Assessment Process

A Section 2 assessment involves:

  1. Medical recommendations: Two registered medical practitioners must independently examine the patient and each provide a medical recommendation. One must be approved under Section 12 of the MHA (a "Section 12 doctor"), typically a consultant psychiatrist. The second can be any registered doctor, preferably one who knows the patient (e.g., their GP).
  2. AMHP application: The AMHP carries out their own assessment, consults the nearest relative (where practicable), considers alternatives, and — if satisfied with the criteria — makes the application in writing to the hospital managers.
  3. Admission: The patient is conveyed to the hospital. The hospital managers accept the application and the patient is lawfully detained from this point.

Both medical recommendations should be dated no more than 5 clear days before the AMHP's application. In practice, both doctors and the AMHP try to assess the patient at the same time and place (a "joint assessment").

Patient Rights During Section 2 Detention

Upon admission under Section 2, the patient must be given written information explaining:

  • The nature and grounds of their detention
  • Their right to apply to a Mental Health Tribunal — they can apply within the first 14 days of detention
  • Their right to an Independent Mental Health Advocate (IMHA)
  • How to make a complaint

The hospital managers must also consider whether the patient has a "nearest relative" under the MHA 1983 and inform them of the admission.

Treatment without consent is limited under Section 2 — medication can only be given without consent for the first 3 months of detained treatment; beyond that, a Second Opinion Appointed Doctor (SOAD) approval is required for continued administration of medication against the patient's wishes.

Discharge from Section 2

A patient can be discharged from Section 2 in several ways:

  • Responsible Clinician (RC): The consultant psychiatrist (or other approved clinician) responsible for the patient's care can discharge the patient at any time.
  • Hospital managers: The hospital managers have a duty to consider discharge and can direct it. They must consider discharge at the patient's request.
  • Nearest relative: The nearest relative can give 72 hours' written notice to the hospital managers to discharge the patient — unless the RC certifies that the patient would be "likely to act in a manner dangerous to themselves or others" if discharged (a "barring report").
  • Mental Health Tribunal: Following an appeal, the Tribunal may order the patient's discharge.

Section 2 cannot be renewed — after 28 days the patient must either be discharged or, if continued detention is necessary, an application for Section 3 must be made before the Section 2 expires.

Frequently asked questions

Can I be sectioned under Section 2 if I am already a voluntary patient in hospital?
Yes. If you are already an informal patient and you try to leave or refuse treatment, the ward doctor can use Section 5(2) (a 72-hour holding power) to prevent you leaving while an MHA assessment is arranged. If the assessment results in a Section 2 or 3 application, you will then be formally detained.
What is the difference between Section 2 and Section 3?
Section 2 is for assessment (up to 28 days, not renewable). It is used when there is uncertainty about the diagnosis or treatment plan. Section 3 is for treatment (initially 6 months, renewable) and is used when the disorder and appropriate treatment are already known. The nearest relative can block a Section 3 application but cannot block a Section 2.
Can I refuse to take part in the Section 2 assessment?
You can decline to engage with the assessment, but an AMHP and doctors can still carry out the assessment and make an application based on available information and their clinical judgment. You cannot physically prevent a lawful assessment if it is arranged appropriately.
What is a Section 12 doctor?
A Section 12 approved doctor is a registered medical practitioner approved by the Secretary of State for Health under Section 12 of the MHA 1983 as having special experience in the diagnosis and treatment of mental disorder. Typically, this is a consultant psychiatrist. At least one of the two medical recommendations for Sections 2 and 3 must come from a Section 12 approved doctor.

What to do next

  1. 1
    Mental Health Tribunal

    How to appeal your Section 2 detention within 14 days.

  2. 2
    Advocacy and IMHA

    Access a free Independent Mental Health Advocate to support you.

  3. 3
    Nearest Relative rights

    Understand the nearest relative's role and powers.

  4. 4
    Rethink Mental Illness helpline

    Specialist mental health law advice.

Official bodies and resources

National Health Service

Government

The publicly funded healthcare system in the United Kingdom, providing free healthcare for all UK residents.

Care Quality Commission

Regulator

The independent regulator of health and adult social care in England, inspecting and rating care services.

Citizens Advice

Charity

Provides free, confidential, and independent advice on a wide range of issues including benefits, housing, debt, and employment.

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Disclaimer

This information is for general guidance only and does not constitute legal advice. You should seek qualified legal help if your situation requires it.