Can I create an affidavit online?

Yes, but the document must be accurate, complete and properly sworn or affirmed before an authorised person if it is to function as a valid affidavit. The correct format and wording depend on the intended use and jurisdiction.

Who can witness or administer an affidavit in the UK?

In the UK, affidavits can usually be sworn before a solicitor, commissioner for oaths, notary public or certain court officers. The authorised person verifies the oath or affirmation, not necessarily the truth of the contents.

How is an affidavit different from a deed?

No. A deed is a formal legal instrument used to create or confirm obligations, transfers or rights, such as property transfers or guarantees. An affidavit is sworn evidence of facts and does not itself usually create legal rights or obligations.

What is the difference between swearing and affirming an affidavit?

An affirmation is a solemn non-religious promise that the contents of the affidavit are true. An oath is religious. Both can make an affidavit valid, provided the required formalities are followed.

Is an affidavit the same as a notarised document?

A notarised document is certified by a notary public, often for international use. An affidavit may be sworn before a notary, but not all affidavits need notarisation. The requirement depends on the receiving authority.

Can a certificate of truth replace an affidavit?

A certificate of truth is not a standard substitute for an affidavit. If a court or authority asks for an affidavit, a statement, certificate or declaration may be rejected unless the receiving body confirms it is acceptable.

What should an affidavit contain?

Affidavits should be in the first person, set out facts clearly in numbered paragraphs, avoid opinion unless relevant, identify exhibits and end with a jurat showing when, where and before whom the affidavit was sworn or affirmed.

What happens if an affidavit contains false information?

Yes. Knowingly making a false affidavit can amount to perjury or contempt of court and may lead to criminal penalties, civil consequences or rejection of the evidence.

Are affidavits still used in England and Wales?

Affidavits are less common in routine civil litigation in England and Wales because witness statements with statements of truth are normally used. However, affidavits remain important where rules, courts or authorities specifically require sworn evidence.

How do I know whether to use an affidavit or another legal document?

Use an affidavit when sworn evidence is expressly required. Use a witness statement for most court evidence, a statutory declaration for formal statutory confirmations, and a deed when creating or transferring legal rights. Always check the requirements of the receiving authority.

EN-GB>Disputes>Affidavit>UK Affidavits vs Related Legal Documents

Affidavits Compared With Related UK Legal Documents

Created: 11 Jun 2026

This guide explains how affidavits compare with similar UK legal documents, helping you choose the right format for your situation. It supports the structured dataset by making key differences easier to understand and apply. For drafting support, visit AI Generated Affidavit for use in the United Kingdom.

Main purpose	Authentication method	Usual signer	Common UK uses	Formality level	Difference from affidavit
Affidavit
Formal written evidence of facts made on oath or affirmation.	Sworn or affirmed	Deponent with personal knowledge of the facts.	Court evidence, probate, insolvency, land registration, overseas legal processes.	High	This is the reference document: sworn or affirmed evidence.
Statutory declaration
Formal declaration of facts made under statutory procedure.	Declared	Declarant confirming facts required by law or an authority.	Name changes, lost documents, marital status, identity, property and immigration matters.	High	Declared under statute not sworn as evidence on oath.
Witness statement
Written evidence setting out a witness's factual account.	Signed with statement of truth	Witness giving factual evidence in proceedings.	Civil claims, applications, interim hearings, employment and tribunal evidence.	Medium	Usually signed with statement of truth, not sworn or affirmed.
Statement of truth
Verification wording confirming belief in a document's truth.	Signed with statement of truth	Party, litigation friend, legal representative or witness as applicable.	Statements of case, witness statements, expert reports and court documents.	Medium	It verifies another document it is not usually a standalone sworn document.
Certificate or confirmation letter
Administrative confirmation of a fact, status, record or relationship.	Signed without oath or affirmation	Employer, institution, professional, company officer or records holder.	Proof of employment, address, student status, account details or company records.	Low	Usually not sworn, declared or court-ready evidence.
Affidavit
Sworn evidence supporting probate or estate administration facts.	Sworn or affirmed	Executor, administrator, witness to a will or other person with knowledge.	Explaining will execution issues, missing documents, aliases or estate facts.	High	Affidavit type used when probate evidence must be sworn or affirmed.
Statutory declaration
Formal declaration recording adoption of a new name.	Declared	Person changing name.	Evidence of name change for banks, employers and public bodies.	High	Records a formal declaration rather than sworn evidential testimony.
Witness statement
Written family court evidence from a party or witness.	Signed with statement of truth	Parent, party, professional or other family court witness.	Children cases, financial remedy applications, injunctions and case management.	Medium	Family evidence is often by statement unless affidavit evidence is directed.
Affidavit
Sworn evidence supporting insolvency applications or creditor steps.	Sworn or affirmed	Creditor, process server, office-holder or person with relevant facts.	Service evidence, bankruptcy petitions, winding-up petitions and insolvency applications.	High	Affidavit format may be required for insolvency evidence in specific contexts.
Statement of truth
Confirms a statement of case is believed to be true.	Signed with statement of truth	Party or legal representative authorised to sign.	Claim forms, particulars of claim, defences and replies.	Medium	No oath ceremony court rules prescribe verification wording.
Statutory declaration
Formal declaration explaining loss or absence of a document.	Declared	Person responsible for or affected by the missing document.	Lost certificates, missing title documents, lost share certificates or licences.	High	Used as a statutory declaration of loss, not sworn evidence on oath.
Witness statement
Records how, when and where documents were served.	Signed with statement of truth	Process server, solicitor, agent or person who served documents.	Proving service of claim forms, applications and court orders.	Medium	Civil service evidence is often by certificate or statement, not affidavit.
Certificate or confirmation letter
Confirms employment status, role, salary or work dates.	Signed without oath or affirmation	Employer, HR officer, manager or company signatory.	Mortgage applications, tenancy checks, visa support and income verification.	Low	Confirms records administratively does not create sworn evidence.
Affidavit
Sworn evidence where family rules or court directions require it.	Sworn or affirmed	Party, witness or professional directed to give sworn evidence.	Specific applications where the court directs affidavit evidence.	High	Affidavit evidence is exceptional where statements of truth usually suffice.
Statutory declaration
Declares marital status or freedom to marry where required.	Declared	Person confirming status for marriage or overseas recognition.	Marriage abroad, consular processes and civil status confirmation.	High	A formal declaration of status, not sworn litigation evidence.
Witness statement
Sets out workplace evidence for tribunal hearing use.	Signed with statement of truth	Claimant, respondent, manager, colleague or HR witness.	Unfair dismissal, discrimination, wages and whistleblowing disputes.	Medium	Prepared for tribunal evidence exchange normally not sworn.
Statement of truth
Verifies an expert report and confirms expert duties.	Signed with statement of truth	Court expert or party-appointed expert.	Medical, valuation, engineering, accounting and professional negligence reports.	Medium	Confirms expert report compliance not sworn factual testimony.
Certificate or confirmation letter
Confirms enrolment, attendance, course or qualification status.	Signed without oath or affirmation	School, college, university or training provider officer.	Council tax discounts, visas, banking, accommodation and funding checks.	Low	Institutional confirmation only not sworn evidence by the student.
Affidavit
Sworn confirmation of loss, identity or document circumstances.	Sworn or affirmed	Document holder or person reporting the loss.	Replacement documents, consular requests and overseas administrative requirements.	High	Affidavit format is used when the recipient requires sworn confirmation.
Statutory declaration
Declares personal, relationship, sponsorship or identity facts formally.	Declared	Applicant, sponsor, partner, parent or supporting declarant.	Visa evidence, relationship facts, address history and identity discrepancies.	High	Formal declaration may be accepted where sworn evidence is not required.
Witness statement
Records accident, injury, treatment or loss evidence.	Signed with statement of truth	Claimant, defendant, eyewitness, clinician or loss witness.	Road traffic claims, workplace accidents and clinical negligence disputes.	Medium	Civil trial evidence is usually by signed witness statement.
Statement of truth
Verifies evidence supporting an interim or procedural application.	Signed with statement of truth	Applicant, respondent, solicitor or witness with relevant facts.	Summary judgment, relief from sanctions, extensions and procedural orders.	Medium	Application evidence can often be verified without an oath.
Certificate or confirmation letter
Confirms a person's address or residence record.	Signed without oath or affirmation	Landlord, employer, university, local authority or service provider.	KYC checks, school applications, tenancy checks and benefit administration.	Low	Relies on organisational records, not personal sworn evidence.
Affidavit
Sworn evidence supporting land registration or title facts.	Sworn or affirmed	Owner, occupier, conveyancer, neighbour or knowledgeable witness.	Adverse possession, boundaries, lost deeds and ownership history.	High	Affidavit may be accepted where sworn title evidence is requested.
Statutory declaration
Formal declaration of property occupation, use or title facts.	Declared	Owner, occupier, seller, neighbour or conveyancing witness.	Rights of way, boundaries, lost deeds and absence of breaches.	High	Often used for conveyancing declarations instead of sworn affidavit evidence.
Witness statement
Sets out tenancy, rent arrears or possession-related facts.	Signed with statement of truth	Landlord, tenant, housing officer, managing agent or neighbour.	Possession claims, disrepair disputes, rent arrears and injunctions.	Medium	Normally court-rule evidence with statement of truth rather than oath.
Statement of truth
Confirms truth and creates consequences for false verification.	Signed with statement of truth	Person responsible for the verified document.	Court documents where false statements may lead to contempt proceedings.	Medium	Serious verification, but no commissioner administers an oath.
Certificate or confirmation letter
Confirms company information held in official or internal records.	Signed without oath or affirmation	Company officer, accountant, solicitor, Companies House or records provider.	Due diligence, banking, tendering, authority checks and corporate records.	Low	Confirms records it is not sworn personal testimony.
Affidavit
Sworn evidence for applications requiring affidavit evidence.	Sworn or affirmed	Applicant, respondent, officer, solicitor or knowledgeable witness.	Specific civil applications where rules, practice directions or orders require it.	High	Affidavit remains appropriate where the procedure expressly requires oath evidence.
Statutory declaration
Declares identity, nationality or personal history facts formally.	Declared	Applicant, parent, sponsor or person confirming personal facts.	Citizenship applications, name discrepancies and personal history evidence.	High	Administrative declaration rather than evidence sworn for court proceedings.
Witness statement
Sets out evidence for public law and judicial review claims.	Signed with statement of truth	Claimant, public authority officer, solicitor or affected witness.	Judicial review, planning challenges, immigration decisions and public authority disputes.	Medium	Usually verified by statement of truth under CPR procedure.
Statement of truth
Verifies possession claim facts and supporting court forms.	Signed with statement of truth	Landlord, claimant, authorised officer or legal representative.	Residential possession claims and related procedural documents.	Medium	Verification is procedural no oath is usually administered.
Certificate or confirmation letter
Confirms professional opinion, status or records in letter form.	Varies by context	Solicitor, accountant, surveyor, GP, notary or regulated professional.	Identity certification, source of funds, capacity letters and transaction support.	Medium	Professional confirmation may carry weight but is not sworn evidence unless made as an affidavit.
Affidavit
Sworn evidence intended for foreign authorities or overseas proceedings.	Sworn or affirmed	Person needing sworn facts accepted abroad.	Foreign court filings, immigration, marriage abroad and overseas property matters.	High	Affidavit may also need notarisation, legalisation or apostille for overseas use.
Statutory declaration
UK-wide formal declaration where a prescribed declaration is acceptable.	Declared	Declarant before an authorised solicitor, commissioner or officer.	Administrative and legal declarations across UK jurisdictions subject to local rules.	High	Declaration procedure is statutory affidavit practice depends more on court or recipient rules.
Witness statement
Gives concise written evidence for a small claim hearing.	Signed with statement of truth	Claimant, defendant, customer, trader or eyewitness.	Consumer claims, unpaid invoices, deposits and modest contract disputes.	Medium	Simpler court evidence usually no oath or commissioner needed.
Statement of truth
Confirms court claim information is true when filing.	Signed with statement of truth	Claimant, defendant or authorised representative.	Money claims, responses, defences and online court filings.	Medium	Digital or paper verification replaces oath for many routine court filings.
Certificate or confirmation letter
Confirms account details, balance, funds or banking relationship.	Signed without oath or affirmation	Bank, building society, accountant or finance officer.	Visa applications, mortgages, audits, litigation disclosure and source-of-funds checks.	Low	Bank record evidence is institutional, not a sworn personal account.
Affidavit
Sworn proof where legislation or procedure permits affidavit evidence.	Sworn or affirmed	Officer, prosecutor, complainant or witness with relevant facts.	Specific statutory proofs, warrants, enforcement and procedural evidence.	High	Affidavit use depends on the exact statutory power or criminal procedure.
Statutory declaration
Formal non-oath declaration for people confirming facts solemnly.	Declared	Person making a solemn declaration before an authorised witness.	Administrative facts where oath wording is unnecessary or inappropriate.	High	Solemn declaration wording differs from sworn or affirmed affidavit wording.
Witness statement
Sets out evidence about negotiations, performance, breach or loss.	Signed with statement of truth	Director, employee, customer, supplier, broker or professional adviser.	Contract claims, debt disputes, misrepresentation and business tort claims.	Medium	Modern civil procedure normally uses witness statements for trial evidence.
Statement of truth
Verifies costs documents and assessment information.	Signed with statement of truth	Solicitor, costs lawyer, party or authorised representative.	Bills of costs, points of dispute and detailed assessment documents.	Medium	Costs verification is by prescribed statement rather than sworn affidavit.
Certificate or confirmation letter
Confirms health, fitness for work or medical attendance facts.	Signed without oath or affirmation	GP, nurse, occupational therapist, pharmacist, physiotherapist or doctor.	Sick pay, workplace absence, benefits, insurance and reasonable adjustments.	Medium	Professional medical confirmation, not sworn evidence by the patient.
Affidavit
Sworn document administered by a solicitor, commissioner or notary.	Sworn or affirmed	Deponent appearing before an authorised oath administrator.	Documents requiring an oath, including some foreign and court documents.	High	Affidavit validity depends on proper oath or affirmation administration.
Statutory declaration
Creates a legally serious declaration with criminal consequences if false.	Declared	Declarant who knows or believes the declared facts.	Important factual confirmations where the recipient needs legal seriousness.	High	False statutory declarations may be prosecuted under perjury legislation.
Witness statement
Sets out incidents and risk evidence for protective orders.	Signed with statement of truth	Applicant, respondent, police officer, support worker or witness.	Non-molestation orders, occupation orders and urgent family applications.	Medium	Urgent family evidence commonly uses statements rather than sworn affidavits.
Statement of truth
Verifies family court forms, applications and evidence.	Signed with statement of truth	Applicant, respondent, litigation friend or legal representative.	Children applications, divorce-related forms and financial remedy evidence.	Medium	Family procedure commonly verifies documents without a sworn oath.
Certificate or confirmation letter
Certifies a copy document as a true copy of the original.	Signed without oath or affirmation	Professional, bank official, solicitor, teacher or authorised certifier.	Passport copies, identity checks, banking, recruitment and applications.	Medium	Certifies a copy document it does not swear the facts in it.

When Should You Use An Affidavit Instead Of A Statement Or Declaration?

In the UK, an affidavit is generally the most formal evidence document in this comparison because it is sworn or affirmed before an authorised person. It is commonly needed where a court rule, tribunal rule, land process, probate process or overseas authority specifically requires evidence on oath.

What Is The Practical Difference Between An Affidavit And A Statutory Declaration?

A statutory declaration is also formal, but it is declared rather than sworn or affirmed. It is commonly used where legislation or an administrative body requires a formal declaration of facts, such as identity, change of name, lost documents or certain immigration and property matters.

Can A Witness Statement Replace An Affidavit?

Often, no. A witness statement is usually signed with a statement of truth and is the normal form of written evidence in many civil proceedings. However, if a rule or recipient specifically asks for an affidavit, a witness statement may not be accepted.

Why Does The Statement Of Truth Matter?

A statement of truth is not usually a standalone evidence document. It is wording added to documents such as witness statements, statements of case and application notices to confirm belief in the truth of the contents. False statements verified by a statement of truth can have serious consequences, including contempt of court.

Are Confirmation Letters A Substitute For Affidavits?

A certificate or confirmation letter is usually less formal and is often used to confirm administrative facts, such as employment, address, academic status or account details. It is not normally sworn, affirmed or declared, so it should not be used where a court, government body or overseas authority requires evidence on oath or a statutory declaration.

Affidavits compared with related UK legal documents

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FAQs

What is an affidavit in the UK?

An affidavit is a written statement of fact sworn or affirmed to be true before an authorised person, such as a solicitor, commissioner for oaths or notary public. It is used as evidence where a sworn document is required in UK legal or administrative processes.

How is an affidavit different from a witness statement?

What is the difference between an affidavit and a statutory declaration?

Is a statement of truth the same as an affidavit?

When might I need an affidavit in the UK?

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