A power of attorney can be rejected if it is signed or witnessed incorrectly. This is especially important when the document will be used abroad, because overseas authorities, banks, lawyers and notaries often expect strict signing, witnessing and legalisation rules to be followed.

The right witness depends on the type of power of attorney, where it will be used and what the receiving authority has requested. Some documents can be witnessed by an independent adult. Others should be signed before a solicitor or notary, especially if they need apostille or embassy legalisation.

In the UK, an apostille is issued by the FCDO Legalisation Office. GOV.UK explains that the Legalisation Office checks whether the signature, stamp or seal on a document is genuine and legalises it by attaching an apostille.

This guide explains who can witness a power of attorney in the UK, when a notary or solicitor is safer, and how to prepare the document for overseas use.

What is a power of attorney?

A power of attorney is a legal document that allows one person to act on behalf of another person.

It may be used for:

• property transactions
• bank accounts
• company matters
• inheritance or probate
• tax matters
• healthcare or care decisions
• signing documents abroad
• dealing with lawyers or notaries overseas
• managing affairs when someone is unavailable or lacks capacity

There are different types of power of attorney, and each can have different signing and witnessing requirements.

Different types of power of attorney

The most common types include:

• lasting power of attorney
• ordinary power of attorney
• enduring power of attorney
• general power of attorney
• specific power of attorney for overseas use
• company power of attorney
• property power of attorney
• notarial power of attorney

A lasting power of attorney, or LPA, has specific UK signing and registration rules. A power of attorney for use overseas may need to follow the requirements of the destination country.

This is why the witness should not be chosen casually. The document may need to be signed in a very specific way.

Who can witness a lasting power of attorney?

For a lasting power of attorney in England and Wales, signatures must be witnessed in person. The Office of the Public Guardian has confirmed that LPA signatures cannot be witnessed online.

The donor, attorneys, replacement attorneys and certificate provider sign the LPA in a specific order. The witness must normally be an adult, and there are restrictions on who can witness which signature.

For example, the certificate provider can act as a witness if they are over 18 and not the donor.

Because mistakes can cause the LPA to be rejected or delayed, the signing order and witness rules should be checked carefully before anyone signs.

Who can witness a power of attorney for overseas use?

For a power of attorney that will be used abroad, the witness requirement usually depends on the destination country and the authority receiving the document.

The receiving authority may ask for the document to be:

• signed before a notary public
• signed before a solicitor
• witnessed by an independent adult
• signed in wet ink
• notarised and apostilled
• legalised by an embassy or consulate
• translated after legalisation
• prepared in a specific bilingual format

If the document will be used for overseas property, court, company or inheritance matters, a notary is often the safer option.

Solicitor witnessing

A solicitor can witness or certify certain documents, depending on the document type and the recipient’s requirements.

Solicitor witnessing may be suitable for:

• some UK powers of attorney
• statutory declarations
• certified copies
• identity documents
• private authority letters
• documents for apostille-only countries
• documents where the receiving authority accepts solicitor certification

If the document needs an apostille, the FCDO may legalise the solicitor’s signature, provided it can be verified.

However, solicitor witnessing may not be enough if the receiving country specifically asks for a notary public.

Notary witnessing

A notary public is often used for powers of attorney that will be used overseas.

Notary witnessing may be required for:

• foreign property transactions
• overseas bank matters
• company powers of attorney
• civil law jurisdictions
• documents for embassies or consulates
• documents that need a notarial certificate
• documents that need embassy attestation after apostille

GOV.UK guidance for British people abroad says that, if you need a certified copy of a UK document so that it can be legalised, you need to use a UK-based notary.

For many overseas powers of attorney, a notary can also confirm identity, witness the signature and attach a notarial certificate suitable for apostille.

Independent adult witnesses

Some powers of attorney may allow a signature to be witnessed by an independent adult.

A suitable independent witness is usually someone who:

• is aged 18 or over
• is not a party to the document
• is not appointed as attorney
• is not a replacement attorney
• is not benefiting from the document
• can be physically present when the document is signed
• can provide their name, address and signature clearly

However, this may not be enough for overseas use. Even if an independent witness is technically allowed, the foreign authority may still require notarial witnessing or apostille legalisation.

Online witnessing and video calls

For documents requiring a witnessed signature, do not assume that video call witnessing is accepted.

The Office of the Public Guardian has confirmed that LPA signatures cannot be witnessed online and must be done in person.

For other powers of attorney, the rules depend on the document and the receiving authority. If the document will be used abroad, remote witnessing may be risky unless the recipient has clearly confirmed that it is accepted.

Signing order for a lasting power of attorney

For an LPA, the signing order matters.

The donor signs first, then the certificate provider, then the attorneys and replacement attorneys. The witness requirements apply at each stage.

If the order is wrong, pages are missing, signatures are not witnessed properly or dates are inconsistent, the Office of the Public Guardian may reject the application or ask for corrections.

For overseas use, you may also need certified copies or apostille after the LPA is registered.

Power of attorney for overseas property

If the power of attorney is for property abroad, check the foreign lawyer’s instructions before signing.

They may require:

• a notarial power of attorney
• bilingual wording
• wet-ink signature
• passport details
• marital status details
• property details
• apostille
• embassy attestation
• certified translation
• local ministry stamping

A UK-style power of attorney may not be accepted for a foreign property transaction unless it follows the destination country’s rules.

Power of attorney for overseas banks

Foreign banks may be strict about powers of attorney.

They may ask for:

• notarised power of attorney
• apostille
• certified passport copies
• proof of address
• bank-specific wording
• certified translation
• embassy legalisation
• evidence of the attorney’s identity
• proof of relationship or authority

Banks often have their own internal requirements, so ask for written instructions before signing.

Does a power of attorney need an apostille?

A power of attorney may need apostille if it is being used outside the UK.

The apostille confirms the recognised signature, stamp or seal on the document. For a power of attorney, the apostille is usually attached to the solicitor’s or notary’s signature, rather than to an informal witness signature.

This is why the witnessing route matters. If the document is signed only before a private individual, it may not have a signature that the FCDO can verify.

Embassy legalisation after apostille

If the destination country accepts apostilles, the FCDO apostille may be enough.

If the country does not accept apostille alone, the power of attorney may need embassy or consular legalisation after apostille.

The process may be:

1. prepare the power of attorney
2. sign before a solicitor or notary
3. submit for FCDO apostille
4. arrange embassy or consular legalisation
5. arrange certified translation, if required
6. send the document to the overseas authority

Embassy legalisation often requires a paper document with wet-ink signatures, so e-Apostille may not be suitable.

Translation requirements

If the power of attorney will be used in a non-English-speaking country, a certified or sworn translation may be required.

The correct order depends on the country. Some authorities want the English document notarised and apostilled first, then translated. Others may require a bilingual power of attorney or a translation completed by a sworn translator in the destination country.

Before arranging translation, check whether the recipient needs:

• notarised power of attorney
• apostilled power of attorney
• bilingual document
• certified translation
• sworn translation
• translation of the apostille
• embassy-attested document

Common mistakes to avoid

Common mistakes include:

• using the wrong type of witness
• signing before the witness is physically present
• using online witnessing when in-person witnessing is required
• letting an attorney witness the donor’s signature
• using solicitor witnessing when notary witnessing is required
• signing the document before the notary appointment
• forgetting the correct signing order for an LPA
• missing pages or attachments
• forgetting apostille or embassy legalisation
• translating the document before checking the correct order

These mistakes can make a power of attorney unusable abroad.

How to prepare a power of attorney for overseas use

The process usually works as follows.

1. get the recipient’s instructions

Ask the foreign lawyer, bank, notary, court or authority exactly how the power of attorney must be signed and legalised.

2. choose the correct witness

Check whether an independent witness is enough, or whether a solicitor or notary is required.

3. sign in the correct way

Do not sign too early. Many documents must be signed in front of the witness, solicitor or notary.

4. arrange apostille

If required, submit the signed and certified document for FCDO apostille.

5. arrange embassy legalisation

If the destination country requires further legalisation, submit the apostilled document to the relevant embassy or consulate.

6. arrange translation

Complete translation in the order required by the receiving authority.

How we can help

We can help prepare powers of attorney and certified copies for overseas use.

Our service can include checking the receiving authority’s instructions, advising whether solicitor or notary witnessing is needed, arranging apostille legalisation, advising on embassy attestation and helping with certified translation.

If you have a power of attorney to sign for use abroad, send us the document and the recipient’s instructions before signing. We can help confirm the safest route and reduce the risk of rejection.