Quick answer
In England and Wales, the rules on who can witness a Lasting Power of Attorney (LPA) are set out by the Office of the Public Guardian (OPG). For the donor’s signature: the witness must be aged 18+ and is generally allowed to be a family member, but cannot be one of the donor’s attorneys. For the attorneys’ signatures: the witness must be aged 18+, cannot be the donor, and cannot be another attorney being witnessed. The donor can witness an attorney’s signature. The certificate provider is a separate role from the witness and has its own rules (must have known the donor for 2+ years, or have relevant professional skill). This guide explains the rules in plain English, walks through the practical signing order, and lists the most common mistakes that cause the OPG to reject LPA applications.
Last reviewed: 24 May 2026 by the MP Estate Planning editorial team. Jurisdiction: England and Wales. Scotland and Northern Ireland have different probate and intestacy rules; the IHT thresholds are UK-wide.
Three rule changes you may need to consider (2026/27)
1. Pensions become subject to IHT from 6 April 2027. Most unused defined-contribution pension pots currently sit outside the estate for IHT — that ends on 6 April 2027 (gov.uk policy paper). HMRC estimates around 10,500 estates will face IHT for the first time as a result.
2. Business and agricultural property reliefs capped at £2.5m per person from 6 April 2026. Above the cap, only 50% relief applies — effective IHT of 20%. AIM shares dropped to 50% relief and do not use the £2.5m allowance (Saffery — APR/BPR reforms).
3. The NRB, RNRB and £2m taper threshold are frozen until 5 April 2031 following the 2024 and 2025 Budgets (gov.uk — NRB and RNRB freeze). With inflation, more estates will be pulled into IHT each year — a process commonly called “fiscal drag.”
Can a Family Member Witness Power of Attorney in the UK?
Can a family member witness power of attorney? This is one of the most common questions we hear when people begin preparing a Lasting Power of Attorney (LPA). Ensuring that your LPA is signed and witnessed correctly is critical to its legal validity. In this article, we’ll explain exactly who can and cannot witness your LPA, why proper witnessing is essential, and how to avoid the most common errors.
Need help setting up your LPA with confidence? Book your free consultation today or visit our transparent pricing page to learn more.
Understanding Witness Requirements for Power of Attorney
When completing a Lasting Power of Attorney in the UK, having a suitable witness is essential. The witness’s role is to ensure that the LPA is signed willingly and knowingly, safeguarding against fraud or coercion.
Can a Family Member Witness Power of Attorney Forms?
While it might seem convenient, a close family member usually cannot witness a power of attorney. If the family member is also listed as an attorney or replacement attorney, they are automatically disqualified from witnessing any part of the form. Independence is key—the witness must not benefit from the LPA.
Who Can Legally Act as a Witness?
Anyone acting as a witness must meet the following criteria:
- Be over 18 years of age
- Have full mental capacity
- Be independent and not listed as a donor, attorney, or replacement attorney in the same LPA
This means friends, neighbours, work colleagues, and legal professionals are often appropriate choices.
Can a Family Member Ever Be a Witness?
Yes, but with limitations. If the family member is not a named party on the LPA and has no vested interest in the outcome, they may act as a witness. However, to avoid any appearance of bias or conflict of interest, it’s always better to use someone completely independent.
Witnessing an LPA: Step-by-Step
Here’s how to properly witness an LPA form in the UK:
- The donor signs Section 9 of the form in the presence of the witness
- The witness signs and dates the form immediately after
- Each attorney then signs Section 11 in the presence of their own witness
- The certificate provider signs to confirm the donor understands the LPA
All signatures must be original, completed in ink, and in the correct order. Remote witnessing via video call is not currently accepted.
Why Does Witnessing Matter?
Incorrect witnessing is one of the top reasons LPAs are rejected by the Office of the Public Guardian. Improperly completed forms can lead to significant delays, additional fees, or even invalidate the entire LPA.
Key Roles in the LPA Process
Besides the witness, there are two other vital roles in the LPA process:
- The Donor – the person granting authority
- The Attorney(s) – the individuals appointed to make decisions on the donor’s behalf
- The Certificate Provider – someone who verifies that the donor understands the LPA and is not under pressure
Understanding who can and cannot fulfill each role is essential for ensuring your LPA stands up legally.
What If a Witness Is Not Eligible?
If an ineligible person acts as a witness, the LPA will likely be rejected by the OPG. This can cause significant delays and may require the entire form to be resubmitted—often weeks later. For peace of mind, many people turn to legal professionals to act as witnesses.
Common FAQs About LPA Witnessing
Can a solicitor be my witness?
Yes, solicitors can act as professional witnesses and are a popular choice for ensuring the LPA process is legally compliant.
Can multiple signatures be witnessed by the same person?
Yes, as long as the witness is eligible and present at each individual signing.
Is ID required from witnesses?
No ID is required to submit the LPA, but you may want to keep a record of who acted as witness for your own records.
Top Tips for Choosing the Right Witness
- Choose someone neutral with no involvement in the LPA
- Avoid spouses, children, or attorneys named in the document
- Consider using a solicitor if the situation is complex
Want help reviewing your LPA? Book a free consultation with Our team team.
Conclusion: Choose Your Witness Wisely
So, can a family member witness power of attorney? The answer depends. If they are not named in the document and meet all legal requirements, it may be allowed—but it’s not ideal. The witness must be over 18, have mental capacity, and remain independent from the LPA’s provisions.
Incorrect witnessing is a common reason LPAs are rejected, so it’s vital to get it right. If in doubt, seek professional help. At MP Estate Planning, we simplify the process so you can focus on what matters most—protecting your family’s future.
Ready to ensure your LPA is watertight? Book a call with our team or explore our pricing to get started today.
Witnessing the Attorney’s Signature: Different Rules Apply
One of the most commonly misunderstood aspects of completing a Lasting Power of Attorney is that the witnessing rules are not the same for every signature on the form. The Mental Capacity Act 2005 and the accompanying LPA regulations set out distinct requirements depending on whose signature is being witnessed — and conflating those rules is one of the reasons the Office of the Public Guardian (OPG) returns roughly one in five LPA applications with errors. Getting this right from the outset matters, not least because each LPA currently carries a registration fee of £82, and errors can mean restarting the process entirely.
Witnessing the Donor’s Signature
When the donor signs the LPA, their signature must be witnessed by one person who is present at the time of signing. That witness must be aged 18 or over and cannot be one of the named attorneys or replacement attorneys. In our experience, donors sometimes ask a family member who has no formal role in the LPA to witness — which may be acceptable if that person is not an attorney, replacement attorney, or a beneficiary of the donor’s estate under a linked will. However, the safest approach is typically to choose an independent individual with no financial interest in the donor’s affairs.
Witnessing the Attorney’s Signature
The rules for witnessing an attorney’s signature are slightly different and independently applied. Each attorney must sign in the presence of a witness, but that witness does not need to be the same person who witnessed the donor. Critically, the donor cannot witness an attorney’s signature, and an attorney cannot witness another attorney’s signature on the same LPA. In our experience, this is a pattern that leads to real-world rejections: attorneys signing in each other’s presence and both acting as witnesses, believing this is administratively convenient. It is not permitted. For full regulatory detail, the OPG’s guidance on completing an LPA is available at gov.uk — Make a lasting power of attorney.
Can the Certificate Provider and Witness Be the Same Person?
This is a question our team encounters regularly, and the answer is generally no — though the reasoning is worth understanding clearly. The certificate provider plays a specific statutory role: they certify that the donor understands the LPA and is not being pressured into signing it. The witness, by contrast, simply confirms that the signature was made in their physical presence. While the legislation does not contain an absolute prohibition in every scenario, the OPG’s practical guidance makes clear that the certificate provider should not also act as a witness to the donor’s signature on the same LPA. In our experience, when a certificate provider doubles up as a witness — often because they are the only independent professional present — the document is liable to be queried or returned. We would generally recommend treating these as two entirely separate roles filled by two separate individuals, and would encourage anyone uncertain about their specific circumstances to seek advice from a regulated solicitor.
Your Questions Answered: LPA Witnessing
Why can’t a family member be a witness?
There is no blanket statutory prohibition on every family member acting as a witness, but the restrictions are significant enough that family members are typically unsuitable in practice. Any named attorney, replacement attorney, or anyone who might benefit financially from the donor’s estate cannot witness the donor’s signature. In many families, these restrictions rule out most close relatives. Beyond the strict legal disqualifications, there is also the question of impartiality: the witnessing process is designed to provide a degree of independent assurance that the signature was given freely and in the signatory’s presence. A family member with an emotional or financial stake in the outcome does not provide that assurance, and the OPG may scrutinise such appointments closely.
Can a spouse or partner witness an LPA signature?
A spouse or civil partner is not automatically disqualified from acting as a witness purely on the basis of their relationship to the donor. However, if that spouse or partner is also a named attorney or replacement attorney on the same LPA — which is a very common arrangement — then they cannot witness the donor’s signature. In our experience, this is one of the most frequent misunderstandings we encounter: a donor asks their spouse to witness the form, not realising their spouse is already named as attorney, which invalidates the witnessing entirely.
Can a notary also be a witness on a POA?
Yes, a notary public may generally act as a witness to signatures on an LPA, and in some circumstances — particularly where the donor or an attorney is based overseas — a notary may be the most practical option. That said, physical presence at the time of signing is still required; a notary cannot retrospectively certify a signature they did not observe. If overseas arrangements are involved, we would strongly recommend seeking specialist legal advice, as the standard LPA process is designed for signatories present in England and Wales.
How much would a solicitor charge to witness a signature?
There is no fixed regulatory fee for a solicitor acting as a witness. In practice, charges vary considerably depending on the firm and the context, but witnessing a signature as a standalone service may typically cost anywhere from approximately £20 to £75 or more, depending on the solicitor’s location and whether the witnessing forms part of a broader instruction. Where a solicitor is already advising on the preparation of the LPA, witnessing may be included within that overall fee. Given that an LPA registration error can result in losing the £82 OPG registration fee and significant delay, the cost of professional involvement at the witnessing stage is generally proportionate.
Does it matter who signs as a witness?
Yes — it matters considerably. Under the framework established by the Mental Capacity Act 2005, a witness who does not meet the eligibility requirements can render the LPA invalid, meaning it cannot be registered by the OPG and has no legal effect. An unregistered LPA cannot be used, regardless of the donor’s intentions. In our experience, the most common witnessing errors involve attorneys witnessing each other’s signatures, certificate providers doubling as witnesses, and individuals witnessing signatures they did not physically observe. Each of these mistakes can result in the document being returned or rejected outright.
Can the witness and certificate provider be the same person?
As noted elsewhere in this article, the OPG’s guidance generally treats these as separate roles that should be fulfilled by different individuals. While the legislation does not spell out an absolute prohibition in every conceivable scenario, conflating the two roles in practice creates a significant risk of the application being queried or returned. Our team would always recommend appointing a separate, independent individual to act as the certificate provider, and a different person — also independent and eligible — to witness the relevant signature. If you are uncertain how these roles apply to your specific LPA, we would encourage you to consult a regulated solicitor before the document is signed.