A Proof of Address Letter — also known as a Confirmation of Address Letter or Confirmation of Residency Letter — is a formal written document in which a person with direct knowledge of another person's residential address confirms, in writing, that the named individual is currently living at a specified address in England and Wales. The letter is typically written by someone who has an official or professional relationship with the resident, such as a landlord, employer, solicitor, GP, accountant, or homeowner with whom the resident is living.

Proof of address is one of the two fundamental components of identity verification in England and Wales, alongside proof of identity. It is required by a wide range of institutions and regulatory authorities for compliance, verification, and record-keeping purposes. Banks and building societies regulated by the Financial Conduct Authority (FCA) require proof of address as part of their customer due diligence obligations under the Money Laundering, Terrorist Financing and Transfer of Funds (Information on the Payer) Regulations 2017. The Home Office and UK Visas and Immigration (UKVI) require address evidence as part of most UK visa applications. Local authorities require it for electoral register verification and council tax correspondence. The DVLA requires it for vehicle registration, and the DWP and HMRC require it for benefits and tax correspondence.

Unlike utility bills or bank statements, which are the most common forms of proof of address, a Proof of Address Letter provides a personalised, official confirmation from a known third party. This makes it particularly valuable where a resident does not have utility bills in their own name — for example, where they are living in shared accommodation, staying with a family member, or have recently moved and do not yet have documented evidence of their address in their own name. A formal letter from a landlord or homeowner, written on headed paper and signed, is accepted by most UK financial institutions and government bodies as a valid form of address evidence, particularly when accompanied by a second form of proof.

The letter must comply with the Data Protection Act 2018 and the UK GDPR, as it involves the disclosure of the resident's personal data — including their name, date of birth, and home address — to a third party. The person writing the letter is acting as a data controller and must ensure they have the resident's consent to share this information and that the information disclosed is accurate and used only for the stated purpose.

A Proof of Address Letter is needed in England and Wales in a wide range of situations, spanning financial services, government administration, housing, immigration, and personal administration.

Bank account opening and financial services KYC is one of the most common situations requiring a Proof of Address Letter. Under the Money Laundering Regulations 2017, all FCA-regulated banks and financial institutions in England and Wales must verify the address of new customers as part of their customer due diligence (CDD) process. Residents who cannot provide a utility bill, bank statement, or other standard documentary proof of address in their own name — because, for example, they are living in accommodation where bills are in the landlord's name, or have recently arrived in the UK — can use a Proof of Address Letter from their landlord, employer, or solicitor as alternative address evidence.

UK visa applications are another major context. UKVI requires applicants for student visas, skilled worker visas, family visas, and many other categories to provide evidence of their current residential address in England and Wales as part of their application. A Proof of Address Letter from a UK-based landlord, employer, or sponsor who can confirm where the applicant is living is a widely used form of address evidence in UKVI applications.

Right to Rent checks under the Immigration Act 2014 require private landlords in England to verify the immigration status of all adult occupiers. While a Proof of Address Letter is not the primary document for Right to Rent checks, residents may need one as an ancillary document for registering with local services, such as a GP surgery, a school, or a local authority.

Electoral registration is a further context. To register to vote in England and Wales, individuals must be able to provide evidence of their residential address to their local Electoral Registration Officer. A formal confirmation of address from a landlord or household member can support a registration application where standard documentation is not available.

Other situations include DVLA vehicle registration, where proof of a UK residential address is required; DWP Universal Credit and other benefits applications; HMRC self-assessment and tax registration; and personal situations such as supporting a child's school application or registering with a private healthcare provider.

A well-drafted Proof of Address Letter for use in England and Wales must contain several key elements to be accepted by banks, government agencies, and other UK institutions.

The author's full identification and contact details should appear prominently at the top of the letter. The letter must clearly state who is confirming the address, in what capacity, and how they can be contacted for verification. Banks and institutions conducting KYC checks under the Money Laundering Regulations 2017 may contact the author to verify the contents of the letter, so accurate contact details are essential. A letter written on official or professional headed paper — from a law firm, accountancy practice, employer, or lettings agency — carries significantly more weight than a letter on plain paper.

The author's capacity and relationship to the resident must be clearly stated. The letter should explain why the author is in a position to confirm the resident's address — for example, because they are the resident's landlord under a written tenancy agreement, the resident's employer with knowledge of their registered home address, or a solicitor who has verified the resident's address as part of a legal matter. The more specific and verifiable the stated relationship, the more credible the letter will be.

The resident's full legal name and date of birth are both required in most KYC and UKVI contexts. The resident's name must match exactly the name on their passport, driving licence, or other identity document. Any discrepancy — even in the spelling of a middle name — can lead to the letter being rejected. Including the date of birth allows the receiving institution to cross-reference the letter against the resident's identity documents.

The confirmed address must be set out in full, in standard UK format: street address, city or town, county (where applicable), and full postcode. The address must match exactly the address the resident has provided to the institution. An incomplete address or an incorrectly formatted postcode are among the most common causes of address confirmation rejection in England and Wales.

The duration of residency is an important element that is often overlooked. Many UK institutions require the resident to have lived at the confirmed address for a minimum period — typically three to twelve months — before the address is accepted as a stable, verifiable residential address. The letter should state both the date on which the resident moved in and the total length of time they have been resident.

The purpose of the letter must be clearly stated. A letter prepared for bank KYC purposes may differ in tone and content from one prepared for a UKVI visa application, and some institutions require the letter to specifically reference the legal or regulatory requirement that it is intended to satisfy — for example, the Money Laundering Regulations 2017 or the Immigration Act 2014.

A declaration of truth signed by the author is an essential element of any credible Proof of Address Letter in England and Wales. The declaration should confirm that the information in the letter is true and accurate to the best of the author's knowledge and belief, and should acknowledge that providing false information may constitute an offence under the Fraud Act 2006. This declaration is what distinguishes a formal Proof of Address Letter from an informal note, and it is what gives the letter its legal weight.