A letter of attestation is a formal letter used to confirm facts about a person, document, qualification, employment, address, relationship, business or status. It may be requested by an overseas employer, university, embassy, bank, government office, immigration authority, licensing body or legal adviser.
The challenge is that a simple signed letter is not always enough. If the letter will be used outside the UK, the receiving authority may ask for it to be certified, notarised, apostilled, translated or legalised through an embassy.
The UK Legalisation Office legalises documents by checking whether the signature, stamp or seal is genuine and attaching an apostille. This means a letter of attestation often needs to be signed or certified in a way that the FCDO can verify before it can receive an apostille.
This guide explains what a letter of attestation is, who can write one, what it should include and how to prepare it for overseas use.
What is a letter of attestation?
A letter of attestation is a written confirmation of a fact, statement or status.
It may confirm information such as:
- employment
- job title or salary
- academic study
- qualification completion
- professional membership
- identity
- address
- residence
- marital or family status
- business relationship
- good standing
- character or conduct
- document authenticity
- authority to act
- medical or care-related information
The exact content depends on who is requesting the letter and what they need it to prove.
When a letter of attestation may be needed
A letter of attestation may be requested for:
- overseas employment
- work visa applications
- university admission abroad
- professional registration
- immigration or residency procedures
- foreign bank accounts
- property transactions abroad
- company formation overseas
- tax or compliance checks
- medical or healthcare procedures
- pension or benefits matters
- family or relationship evidence
- character or conduct confirmation
- document verification
For example, a foreign employer may ask for a letter confirming your job title and employment dates. A university may ask for a letter confirming completion of studies. A foreign bank may ask for a letter confirming address, income or professional status.
Who can write a letter of attestation?
The person or organisation writing the letter should be able to confirm the facts stated in it.
Depending on the purpose, the letter may be written by:
- employer
- university or college
- school
- solicitor
- notary public
- accountant
- doctor or medical professional
- landlord or managing agent
- bank or financial institution
- company director
- professional body
- government department
- charity or organisation
- authorised representative
The writer should have direct knowledge of the information being confirmed. A letter from someone who cannot verify the facts may be rejected.
What should a letter of attestation include?
A strong attestation letter should be clear, specific and easy to verify.
It should usually include:
- full name of the person or organisation issuing the letter
- official letterhead, where available
- full name of the person the letter is about
- date of issue
- clear statement of what is being attested
- relevant dates, roles, addresses or reference numbers
- purpose of the letter, if known
- full name and job title of the signatory
- original signature or valid digital signature
- organisation stamp or seal, where available
- contact details for verification
For overseas use, vague wording can cause problems. The letter should state exactly what the receiving authority needs to know.
Letterhead and contact details matter
A letter of attestation is stronger when it is issued on official letterhead.
For example, an employer attestation letter should ideally be on company letterhead and include the employer’s registered details, address, phone number, email address, date and authorised signature.
A university letter should usually include department details, student reference number where relevant, official contact details and the signatory’s position.
If a letter is written on plain paper with no organisation details, it may be harder to certify, verify or apostille.
Does a letter of attestation need certification?
A letter of attestation may need certification if it is being used for an official overseas process.
Certification may be needed where:
- the letter is a private or business document
- the FCDO cannot verify the original signatory directly
- the receiving authority asks for a certified document
- the letter is a copy or PDF
- the letter needs apostille
- the signatory’s identity or authority must be confirmed
- the letter will be used for legal, immigration or financial purposes
GOV.UK explains that certifying a document means getting it signed and dated by a professional person, such as a solicitor, as a true copy of the original.
For overseas legalisation, solicitor or notary certification is often used to create a signature that can be verified by the FCDO.
Solicitor certification for a letter of attestation
Solicitor certification may be suitable where the letter needs to be prepared for apostille but does not require notarial involvement.
A solicitor may certify:
- a copy of the letter
- the identity of the person signing
- the signature on the letter
- that the document has been seen
- that the document is a true copy of the original
This may be used for employment letters, proof of address letters, university letters, private letters, business letters and other documents where solicitor certification is acceptable.
The apostille is then usually attached to the solicitor’s signature, not directly to the original letter.
Notary certification for a letter of attestation
Notary certification may be safer or required where the letter will be used in a more formal overseas legal process.
A notary may be needed for:
- foreign court matters
- property transactions abroad
- powers of attorney
- company documents
- bank or financial procedures abroad
- documents for civil law countries
- documents requiring embassy attestation
- letters where the recipient specifically asks for notarisation
If the receiving authority asks for a notarised letter, solicitor certification may not be enough.
Does a letter of attestation need apostille?
A letter of attestation may need apostille if it will be used abroad and the receiving authority asks for a legalised UK document.
The apostille confirms the recognised signature, stamp or seal on the document or certification. It does not prove that every statement in the letter is true. It confirms that the relevant UK signature, seal or certification has been legalised.
The FCDO can only issue an apostille if there is a signature, stamp or seal it can verify. For many attestation letters, this means the letter must first be certified by a solicitor or notary.
Examples of attestation letters that may need apostille
Common examples include:
- employment attestation letter
- salary confirmation letter
- job title confirmation letter
- university attendance letter
- qualification completion letter
- professional membership letter
- company good standing letter
- address confirmation letter
- character reference letter
- relationship confirmation letter
- medical fitness letter
- bank reference letter
- authorisation letter
- director or shareholder confirmation letter
The apostille route depends on who issued the letter, how it was signed and what the overseas authority requires.
Employment attestation letters
An employment attestation letter may confirm your job title, employment dates, salary, work location, contract type, duties or good standing.
It may be requested for:
- work visas
- overseas employment
- professional registration
- rental or mortgage applications abroad
- tax or residency procedures
- foreign bank checks
For overseas use, the letter may need to be on employer letterhead and signed by an authorised person. It may also need solicitor or notary certification before apostille.
Academic attestation letters
An academic attestation letter may confirm that you studied at a university or college, completed a course, received a qualification or attended during certain dates.
It may be requested for:
- university admission abroad
- qualification recognition
- professional registration
- visa applications
- declaration of value applications
- employment abroad
If the university letter has a verifiable signature, it may be possible to apostille it directly. If not, solicitor or notary certification may be needed first.
Business attestation letters
A business attestation letter may confirm company status, directorship, shareholding, trading activity, authorisation or business relationship.
It may be used for:
- company registration abroad
- overseas bank accounts
- tenders
- trade licences
- tax procedures
- due diligence
- agency appointments
- foreign branch setup
Depending on the destination country, the letter may need company certification, solicitor certification, notary certification, apostille and embassy legalisation.
Medical or care-related attestation letters
A medical attestation letter may be used to confirm medical fitness, treatment, care arrangements, disability support or other health-related facts.
For overseas use, a medical letter may need to be signed by a doctor or healthcare provider and may require certification before apostille.
Because medical information is sensitive, the letter should only include information needed by the receiving authority.
Digital letters and PDFs
Many letters of attestation are now issued as PDFs. This can be convenient, but not every PDF can be apostilled directly.
A PDF may need certification if:
- it has no verifiable digital signature
- it is a scanned letter
- it is printed from an online portal
- the signatory cannot be verified
- the recipient asks for a certified or apostilled copy
- the document must be used in paper form
GOV.UK explains that e-Apostilles are available for PDF files that have been electronically signed by a UK notary or solicitor. It also notes that a paper apostille may be needed if the destination country does not accept e-Apostilles or if the document must be submitted physically.
Translation requirements
If the letter of attestation will be used in a non-English-speaking country, translation may be required.
The correct order depends on the receiving authority. Some authorities want the letter certified and apostilled first, then translated. Others may require the translation itself to be certified, sworn, notarised or legalised.
Before arranging translation, check whether the recipient needs:
- original letter
- certified copy
- notarised letter
- apostilled letter
- certified translation
- sworn translation
- translation of the apostille
- embassy-attested translation
Embassy legalisation after apostille
If the letter is going to a country that accepts apostilles, the FCDO apostille may be enough.
If the destination country does not accept apostille alone, the letter may need embassy or consular legalisation after the apostille.
This is common for some business, employment, education and legal documents going to non-Hague countries.
The process may include:
- preparing the letter on correct letterhead
- signing by the correct person
- solicitor or notary certification, if required
- FCDO apostille
- embassy or consular legalisation
- certified translation, where required
Common mistakes to avoid
Common mistakes include:
- using a vague letter that does not confirm the required facts
- missing the date, signatory name or job title
- using plain paper when official letterhead is expected
- submitting a scan without certification
- assuming any signed letter can be apostilled directly
- choosing solicitor certification when notarisation is required
- forgetting apostille for overseas use
- ignoring embassy attestation requirements
- translating the letter before checking the correct order
- using an old letter when the recipient wants a recent one
These mistakes can cause delays or rejection by the overseas authority.
How to prepare a letter of attestation for overseas use
The process usually works as follows.
1. check the recipient’s wording
Confirm exactly what the letter must prove and whether the recipient has a template or required wording.
2. use the correct issuer
The letter should be written by a person or organisation with authority to confirm the facts.
3. include clear details
Make sure the letter has names, dates, reference numbers, signatory details and contact information.
4. confirm certification requirements
Check whether the letter needs solicitor certification, notary certification or direct apostille.
5. arrange apostille
Submit the certified or eligible letter for FCDO apostille if required.
6. arrange translation or embassy legalisation
Complete any additional country-specific steps in the correct order.
How we can help
We can help prepare letters of attestation for overseas use.
Our service can include checking whether your letter is suitable, advising on wording, confirming whether solicitor or notary certification is needed, submitting the letter for FCDO apostille, advising on e-Apostille or paper apostille and helping with translation or embassy legalisation where required.
If you have been asked for a letter of attestation, send us the recipient’s instructions and the country where the letter will be used. We can help confirm the safest route before the letter is signed or certified.