When a person is kept in a hospital or care home for their own safety, it’s called a deprivation of liberty.
In many cases it’s necessary; in every case it must be lawful.
That’s why the Deprivation of Liberty Safeguards exist to make sure any restriction on someone’s freedom is proportionate, justified and regularly reviewed.
But what if something changes?
What if the person’s health improves, the care plan drifts or the restrictions no longer make sense?
That’s when Section 21A of the Mental Capacity Act 2005 comes into play. It’s the legal route that lets anyone with standing ask the Court of Protection to check whether a DoLS authorisation still meets the law’s high standards.
Why Section 21A Matters
A DoLS order gives extraordinary power to others: it allows professionals to limit a person’s freedom of movement, contact and decision-making.
Those powers must never become routine.
Section 21A ensures they’re used only while genuinely needed.
The Court of Protection can review every aspect of an authorisation — the assessments behind it, the way it was granted and whether the person’s current circumstances still justify it.
It’s an accountability mechanism built into the system itself.
Who Can Bring a Section 21A Challenge
The law keeps the process open:
- The person deprived of liberty (P) — usually through a solicitor, funded by legal aid.
- The Relevant Person’s Representative (RPR) — appointed under DoLS to support and, if needed, challenge the authorisation.
- An Independent Mental Capacity Advocate (IMCA) — where no friend or relative can act.
- Local authorities or NHS bodies — if they believe the order may no longer be lawful.
Anyone who notices that a DoLS order feels out of date or overly restrictive has the right to bring it before the court.
The Legal Question the Court Asks
Section 21A challenges focus on one key test:
Is this deprivation of liberty still necessary and proportionate in the person’s best interests?
Everything else the paperwork, the assessments, the medical reports feeds into that single question.
The Most Common Grounds for Challenge
While every case is unique, experience shows seven main reasons why people bring a Section 21A challenge.
1. The Person Has Regained Capacity
Capacity can change. A stroke patient may recover; dementia symptoms may stabilise.
If the person can now decide where to live or how to be cared for, there is no legal basis for continued deprivation of liberty.
The law demands that capacity be reassessed and, if regained, the DoLS order must end.
2. The Restrictions Are No Longer Necessary
DoLS authorisations are meant to evolve with the person.
If constant supervision or locked doors are no longer required, the order becomes disproportionate.
A Section 21A review can remove or reduce those restrictions so the care matches reality, not habit.
3. Procedural Errors in the DoLS Process
For an authorisation to be valid, six assessments must be completed covering capacity, best interests, mental health and eligibility.
If any were missed, rushed or poorly evidenced, the authorisation can be invalid.
The court often finds that simple procedural flaws have left people unlawfully deprived of liberty.
4. The Person’s Wishes and Feelings Were Ignored
The Mental Capacity Act requires decision-makers to consider what the person would want.
If those views were overlooked for instance, wanting to live nearer family or refusing certain restrictions the authorisation can be challenged.
Section 21A reminds professionals that “best interests” are not decided in isolation.
5. The Wrong Legal Framework Was Used
A DoLS order applies only to hospitals and care homes.
If someone in supported living or a private setting is restricted under DoLS instead of a deprivation of liberty order from the Court of Protection, the arrangement is unlawful.
This technical point is a frequent and valid ground for challenge.
6. Circumstances Have Changed
Life moves on. Medication, behaviour, risk levels or living arrangements can all shift.
If the authorisation doesn’t reflect the current situation, it needs to be revisited.
Section 21A ensures the law keeps pace with the person’s reality.
7. Possible Breach of Human Rights
Under Article 5 of the Human Rights Act 1998, everyone has the right to liberty.
Restrictions that go beyond what’s strictly necessary such as unnecessary isolation or excessive control can amount to a human-rights violation.
The Court of Protection takes such breaches seriously and can amend or end the order immediately.
What the Court Can Decide
Once an application is made, the court may:
- Confirm the DoLS order as lawful,
- Vary the conditions to reduce restrictions
- Terminate the authorisation altogether.
It can also order fresh capacity or best-interest assessments and ensure future reviews are handled properly.
The emphasis is always on balance protecting the person’s safety without unnecessarily limiting their freedom.
The Role of Solicitors
Navigating a Section 21A challenge requires precision.
Court of Protection solicitors gather medical reports, question assessments and present evidence clearly to the judge.
They also ensure that the person at the centre of the case who may not be able to speak for themselves has an independent voice in court.
Legal aid covers most Section 21A cases, so representation is available without cost to the individual.
Why These Challenges Matter
Every challenge serves a larger purpose: to remind institutions that liberty is not optional.
Section 21A is not about fault-finding; it’s about accountability.
It keeps care systems transparent and responsive, ensuring the law adapts when people’s needs do.
When families or advocates bring a case, they’re not creating conflict — they’re using the system as intended: to keep protection humane and proportionate.
When to Seek Legal Advice
If you believe a DoLS order or deprivation of liberty order no longer reflects a person’s situation or if you’re unsure the process was handled correctly, seek advice promptly.
Welford Solicitors specialises in mental capacity law and Court of Protection cases, including Section 21A challenges.
Our solicitors help families, advocates and professionals navigate the process with clarity, evidence and respect for the person’s rights.