eSignature legality summary
English law generally imposes no requirement that a contract be in writing or signed, so most agreements can be concluded with an electronic signature, which is admissible in evidence. The Law Commission confirmed in 2019 that an electronic signature can execute most documents, including deeds, provided any witnessing or attestation formalities are met. UK eIDAS sets the SES / AES / QES tiers, with a QES having effect equivalent to a handwritten signature.
Types of permitted electronic signature
UK eIDAS defines a simple electronic signature (SES), an advanced electronic signature (AES), and a qualified electronic signature (QES); a QES has the equivalent legal effect of a handwritten signature, and no electronic signature is denied admissibility merely for being electronic. No specific technology is required for an ordinary signature, but higher-assurance methods and an audit trail strengthen evidence.
Documents that may be signed electronically
Most commercial agreements — NDAs, vendor and SaaS contracts, procurement, and HR — can be electronically signed. A deed can be signed electronically where the witnessing and attestation requirements are satisfied (the witness being physically present).
Use with caution / not typically appropriate
Deeds require a witness; HM Land Registry imposes specific requirements for electronic signatures on dispositionary deeds; take care with documents that must be registered.
- Wills (the Wills Act 1837 requires a wet-ink signature and witnesses)
- Documents HM Land Registry requires in a particular form
- Lasting powers of attorney and documents with specific statutory execution formalities
- Documents requiring notarization
Seminal court cases
None reported.
Primary sources
- Electronic Communications Act 2000, s. 7
- UK eIDAS (Regulation (EU) 910/2014 as retained)
- Law Commission report on the electronic execution of documents (2019)
Disclaimer: This guide is general information, not legal advice, and is not a guarantee that any signature will be enforceable for a particular document, transaction, or jurisdiction. E-signature and data-protection laws change frequently. Confirm the requirements for your specific document and parties, and consult a licensed lawyer in the relevant country before relying on electronic signing.
Last reviewed: June 15, 2026