Who Can Witness An LPA?

09th March 2026

Who Can Witness An LPA? Ensuring your witness is valid for your LPA in the UK is something a lot of people are concerned about. The signing stage should feel simple, but small witnessing mistakes are one of the most common reasons LPAs are rejected by the OPG.

The good news is the rules are clear and not that difficult to understand.

If you choose the right witness and sign in the correct order, your LPA will be accepted without issue.

Why the witness matters for an LPA

A witness confirms that a signature on the LPA is genuine.

They are there to see the person sign the document and then sign themselves to confirm it happened.

The Office of the Public Guardian is partially reliant on witnesses to help prevent fraud and ensure the donor and attorneys aren’t being forced to sign the LPA.

If a witness is not eligible or the signing process is done incorrectly, the LPA can be rejected. This often means completing and signing the forms again.

Who can witness an LPA signature in the UK

Almost any adult can act as a witness.

They must be over 18 and have the mental capacity to understand what they are witnessing.

A witness does not need legal training. They don’t need to be a solicitor or a professional.

Friends, neighbours or colleagues can usually act as witnesses.

It’s key that they physically watch the person sign the document.

Who should not act as an LPA witness

There are a few important restrictions.

An attorney named in the LPA should not witness the donor’s signature.

It’s good practice to avoid family members of the attorneys acting as witnesses, because this helps prevent any suggestion of influence or conflict of interest.

If the witness is closely connected to the attorneys or could benefit from the LPA, the Office of the Public Guardian may have questions.

Choosing an independent adult is the safer option.

Understanding the LPA signing order

The order of signatures matters just as much as who witnesses them.

The donor signs first and their signature must be witnessed by an independent adult.

Next, the certificate provider signs to confirm the donor understands the document and is not under pressure to apply for the LPA.

Finally, the attorneys sign their sections, each with their own witness.

If the order the document is signed is incorrect, the application will likely be rejected.

Here are some practical tips to avoid witness mistakes

Before signing your LPA, double check a few simple things.

Is the witness over 18?

Are they physically present when the signature happens?

Is their full name and address written clearly?

Does each signature have a witness where required?

Taking a few extra minutes here to make sure everything is right can prevent weeks of delay later.

When people run into problems with LPA witnesses

Many rejected LPAs come down to simple witness errors.

Sometimes the same person signs in the wrong section.

In other cases, an attorney witnesses a signature when they should not.

Another common issue is the signature dates being in the wrong order.

It sounds simple, but these mistakes are easy to avoid once you know what the Office of the Public Guardian expects.

Getting help with the LPA signing process

Completing a Lasting Power of Attorney on your own is definitely possible, but the process can sometimes be confusing.

Many people prefer guided services like Power of Attorney Online that walk you through the form and the signing process.

This helps ensure witnesses, certificate providers and attorneys all sign correctly before the LPA is sent for registration.

Choosing the right witness for your LPA is important and it doesn’t have to be complicated.

Pick the right adult, make sure they actually watch the signature and follow the correct signing order.

Doing this carefully and you’ll help ensure your Lasting Power of Attorney is accepted first time round.

It also gives you peace of mind your plans are properly in place if you ever need someone to act on your behalf.