Are electronic signatures legal in the UK?
Electronic Communications Act 2000 + retained eIDAS equivalents (post-Brexit)
Valid for the vast majority of commercial contracts. SES is admissible as evidence of a signature in UK courts.
Legally valid
Electronic signatures in United Kingdom
The UK's Electronic Communications Act 2000 established the legal validity of electronic signatures before Brexit. After leaving the EU, the UK retained its eIDAS-equivalent framework through the European Union (Withdrawal) Act 2018. The UK has three tiers of electronic signature mirroring the EU model: Simple Electronic Signature (SES), Advanced Electronic Signature (AES), and Qualified Electronic Signature (QES). For everyday commercial contracts, SES is sufficient.
What you need to know
- The UK Law Commission confirmed in 2019 that electronic signatures satisfy legal requirements for execution of documents, including contracts and deeds (with caveats for witnessed deeds).
- Deeds must still be witnessed, but the witness can be physically present while both parties sign electronically, or the deed can use a platform supporting witnessed e-signatures.
- InkRobin produces a Simple Electronic Signature (SES), which is appropriate for standard commercial contracts, NDAs, service agreements, and offer letters.
- HMRC accepts electronically signed documents in most tax-related contexts.
Common exclusions
These document types typically require a handwritten or notarized signature in United Kingdom.
- Wills and testamentary documents
- Land Registry transfers (require witnessed signatures or specific electronic conveyancing procedures)
- Powers of attorney (require witnessing)
- Court documents in some proceedings
What InkRobin produces
InkRobin produces a Simple Electronic Signature (SES): the baseline tier under eIDAS and equivalent frameworks. SES is valid for most commercial contracts in United Kingdom. It is not a Qualified Electronic Signature (QES), it does not involve a digital certificate from a Certification Authority, and it is not a substitute for notarization. For specific legal advice, consult a qualified lawyer.
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