Quick Guide – Mental Capacity Act

  • This quick guide is an attempt to “operationalise” some complex issues but you should refer to your own force policy and your supervisors for specific local requirements.
  • To determine whether or not someone lacks capacity the “ID A CURE” Test can be applied –
  • Impairment – is there an impairment (temporary or permanent) which prevents the person from being able to ‘CURE’, as below; OR
  • Disturbance – is there a disturbance of the mind (temporary or permanent) which prevents the person from being able to ‘CURE’, as below;
  • ANDjust one of the follow factors then need be absent for the person to lack capacity
  • Communicate – can the person communicate their decision to you (even if not verbally)?
  • Understand – can the person understand the information that would enable them to make the decision?
  • Retain – can the person retain the information in order to make the decision?
  • Employ – can the person employ the information to make the decision effectively?
  • If action involves removal to a healthcare facility, either a psychiatric unit or an Accident & Emergency department, ensure that NHS staff are made aware that the Mental Capacity Act has been applied.
  • Inform your sergeant that this action has been taken so they can support your actions / decisions.
  • Determine capacity with reference to the test in s2 MCA – not a scientific assessment, just a considered decision.
  • Whether someone can take a decision is determined by the approach in s3 MCA.
  • Undertake proportionate acts to safeguard someone’s best interests (understood from s4 MCA), in accordance with the principles in s1 MCA.
  • According to s4A MCA no-one is authorised to deprive another person of their liberty, unless it is a s4B MCA response to the need for life-sustaining treatment or to prevent a serious deterioration in their condition.
  • Officers are then protected from liabilities by virtue of s5 MCA, as long as they acted in the best interests of someone they believed lacked capacity.
  • Any ‘restraint’ must be done in accordance with s6 MCA.

The Mental Health Cop blog

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– won a World of Mentalists #TWIMAward for the best in mental health blogs

ccawards2013 was highlighted by the Independent Commission on Policing & Mental Health
– was referenced in the UK Parliamentary debate on Policing & Mental Health
was commended by the Home Affairs Select Committee of the UK Parliament.


3 thoughts on “Quick Guide – Mental Capacity Act

  1. Can you please answer this question. Paramedics and Police are on scene in a private premises. The vulnerable person is suffering a medical emergency and the paramedic has deemed they lack capacity. But the refuse to come with the ambulance. Do we (the police) have a power to restrain and remove even though it is not us who have deemed them lacking capacity. ?

    Paramedics and police are on scene in a private premises. The vulnerable person has taking an overdose but refuses to leave. Again what can we do?

    Many thanks
    PS Met Pol

    1. It depends on the nature of the medical emergency. There is certainly no problem with the police acting after a more qualified health professional has declared that someone lacks capacity. The thing you have to be satisfied of – I’d want it explained to me – is what, precisely, do they lack capacity for? Presumably, it is around consent to medical treatment. THe next questions are –

      1. Can we help this person achieve capacity in anyway, by giving them time, communicating differently, etc.? If not,
      2. Is physically removing them to A&E the least restrictive thing, in their best interests?

      To remove someone’s liberty and hold them in a form of detention, depriving them of their liberty, is only ever justified under the Act itself if you are doing it “in order to provide a life-sustaining intervention” or to do a “Vital act to prevent a serious deterioritation in their condition.” If you are happy that they cannot be helped to achieve capacity, that removal to A&E is the least restrictive thing in their best interests and that it is necessary to provide a life sustaining intervention, then you will be able to defend your actions under s5 MCA. If you are not satisfied of these things, then such an intervention would not be justified.

      Does that make sense?!

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