Who Can Witness an LPA Signature?
Getting the witnessing right is essential. Here are the rules for who can and cannot witness your LPA.
Written by James Tyrrell · Reviewed by Anthony Dalton · Last reviewed
You might assume that witnessing an LPA signature is straightforward — just grab a neighbour and you are done. In practice, the witnessing rules trip up more people than almost any other part of the process. Getting them wrong is one of the most common reasons LPAs are rejected by the Office of the Public Guardian (OPG). Witnessing is just one part of the overall process — our guide on how to make an LPA in the UK covers the full picture. The rules come from the Mental Capacity Act 2005 and its accompanying regulations. This guide explains exactly who can act as a witness and how to avoid costly mistakes.
At a glance
- Any independent adult aged 18 or over can witness an LPA signature — no professional status is required
- An attorney named in the LPA cannot witness the donor's signature, but can witness another attorney's signature
- The witness must be physically present when the signature is made and must provide their full name and address
- Witnessing errors are one of the most common reasons the OPG rejects LPA applications
The Basic Requirements for a Witness
To act as a witness for an LPA signature, a person must meet the following basic requirements:
- Be aged 18 or over
- Have mental capacity to understand they are witnessing a signature
- Be physically present when the signature is made (they must watch the person sign)
- Provide their full name and address on the LPA form
A witness does not need to be a solicitor, doctor, or other professional. Any independent adult who meets these criteria can act as a witness for an LPA.
Witnessing the Donor's Signature
The donor (the person creating the LPA) must sign the document in the presence of a witness. There is one critical restriction:
Important rule: An attorney named in the LPA cannot witness the donor's signature. This applies to both original attorneys and replacement attorneys. However, an attorney can witness the signature of another attorney.
People who can witness the donor's signature include:
- A friend or neighbour (who is not named as an attorney)
- A work colleague
- A family member who is not named as an attorney
- The certificate provider (they can also witness, though it is not required)
- Any other independent adult aged 18 or over
Witnessing the Attorneys' Signatures
Each attorney must also sign the LPA in the presence of a witness. The rules for witnessing an attorney's signature are slightly more relaxed:
- The donor can witness an attorney's signature
- Another attorney named in the same LPA can witness an attorney's signature
- Any independent adult aged 18 or over can witness an attorney's signature
The same person can witness the signatures of multiple attorneys if needed. There is no requirement to use a different witness for each attorney.
The Signing Order Matters
LPAs must be signed in a specific order. If the signing order is wrong, the OPG will reject the LPA and you will need to start again. The correct order is:
The donor signs first
The donor must sign the LPA before anyone else. Their signature must be witnessed by someone who is not named as an attorney in the LPA.
The certificate provider signs second
The certificate provider must sign after the donor. Their signature confirms that, in their opinion, the donor understands the LPA and is not being pressured into making it.
The attorneys sign last
Each attorney (and each replacement attorney) signs after the donor and certificate provider. Their signatures must each be witnessed.
Everyone does not need to sign on the same day. The donor can sign on one date, and the attorneys can sign days or weeks later. What matters is the order, not the timing.
Who Cannot Be a Witness
While the legal restrictions are limited, there are some people who should not act as a witness for an LPA:
For the Donor's Signature
An attorney or replacement attorney named in the LPA cannot witness the donor's signature. This is a strict legal requirement. Anyone under 18 is also ineligible.
Best Practice
While not a legal requirement, it is best practice to choose a witness who is not a close family member or someone who benefits from the LPA. An independent witness adds credibility and reduces the risk of challenge.
Common LPA Witnessing Mistakes That Cause Rejection
Witnessing errors are one of the top reasons the OPG rejects LPA applications. Here are the most common mistakes to avoid:
- Attorney witnessing the donor's signature — this is the single most common error and will always result in rejection
- Wrong signing order — if an attorney signs before the donor or certificate provider, the LPA is invalid
- Witness not present — the witness must physically watch the person sign. Signing separately and having someone "witness" it later is not valid
- Missing witness details — the witness must provide their full name and address on the form. Incomplete details will cause delays
- Using a child as a witness — the witness must be 18 or over. A signature witnessed by a minor is not valid
- Same person signing as both attorney and witness for the donor — an attorney cannot act in both roles
What Makes a Valid Witness
To summarise, a valid witness for an LPA is someone who:
- Is aged 18 or over
- Has the mental capacity to understand they are witnessing a legal signature
- Is physically present when the signature is made
- Is not an attorney or replacement attorney for the donor's signature section
- Provides their full name and address on the LPA document
If you are unsure whether your chosen witness is suitable, err on the side of caution and pick someone who is clearly independent — a friend, neighbour, or colleague who is not involved in the LPA is usually the best choice.
Key point: If the OPG rejects your LPA due to a witnessing error, you will need to complete and sign a new LPA from scratch and pay the £92 registration fee again. Our guide on how to register an LPA with the OPG explains the full submission process. Getting it right the first time saves both time and money.
More Guides About LPA Signing and Witnessing
People who are legally prohibited from acting as a witness Can a Family Member Witness an LPA?
When relatives can and cannot witness your signature Can an Attorney Witness an LPA?
The rules on attorneys witnessing different signatures What Is a Certificate Provider in an LPA?
The independent safeguard role and who qualifies What Does a Certificate Provider Actually Do?
Step-by-step duties including the private conversation Certificate Provider Rules for LPAs
Full eligibility criteria and independence requirements Can a Doctor Be a Certificate Provider?
Using your GP as certificate provider, fees, and practical tips Can a Friend Be a Certificate Provider?
The two-year rule and what counts as knowing someone well enough LPA Signing Order Explained
The correct sequence of signatures and why order matters Where Should an LPA Be Signed?
Location flexibility and the physical presence requirement Can an LPA Be Signed at Different Times?
Rules about signing dates and coordinating the process What Happens If an LPA Is Signed Incorrectly?
Consequences of signing errors and whether they can be fixed Common LPA Signing Mistakes to Avoid
The most frequent errors that cause OPG rejections
Our guided LPA service helps you avoid signing mistakes by walking you through each step in the correct order. See pricing.
Key Takeaways
- An attorney cannot witness the donor's signature — this is the single most common witnessing error and always results in the LPA being rejected
- The signing order is legally required — donor first, then certificate provider, then attorneys; getting this wrong invalidates the entire LPA
- Physical presence is essential — the witness must watch the person sign in the same room; witnessing via video call is not permitted
- A family member can witness — as long as they are not an attorney, though choosing an independent witness is best practice
- Rejection means starting over — if the OPG rejects your LPA for a witnessing error, you must complete a new document and pay the £92 fee again
Quick Answers on LPA Witnesses
Can a family member witness an LPA signature?
Yes, a family member can witness an LPA signature as long as they are not named as an attorney or replacement attorney in the document. However, it is best practice to choose an independent witness to reduce the risk of any challenge.
Can the same person witness all the signatures on an LPA?
One person can witness multiple signatures, but they cannot witness the donor's signature if they are named as an attorney. A non-attorney witness could witness both the donor's and the attorneys' signatures if they are present at each signing.
Does the witness need to read the LPA document?
No. The witness only needs to be physically present to see the signature being made and then provide their own full name and address on the form. They do not need to read or understand the contents of the LPA.
This guide was last reviewed and updated on . Information is based on current legislation and OPG guidance for England and Wales.
Official Guidance
Further reading from GOV.UK
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