UK GDPR International Data Transfers: A Practical Guide

Identify the transfer

A UK GDPR international transfer occurs when personal data is sent, made available to, or accessed from a country outside the UK, including through a cloud provider, overseas group company, support team or sub-processor. Start by mapping the data, individuals involved, destination countries, recipient organisations and processing activities. Harper James is a modern, full-service UK commercial law firm advising businesses under the laws of England and Wales, including on data protection matters.

Choose the lawful transfer route

Check whether the destination benefits from a UK adequacy regulation. The UK has recognised several destinations, including the European Economic Area, Japan, Switzerland and certain organisations in Canada and the United States. For US recipients, confirm that the organisation is certified under the Data Privacy Framework extension applicable to the UK.

If adequacy does not apply, use an appropriate safeguard. The main options are the UK International Data Transfer Agreement (IDTA), the UK Addendum to the EU Standard Contractual Clauses, binding corporate rules, or an approved code of conduct or certification mechanism. EU Standard Contractual Clauses alone do not provide a UK transfer mechanism. Businesses should also keep the underlying data processing agreement and security obligations aligned with the transfer documents. The latest international transfer resources provide a useful starting point for reviewing current regulatory material.

Complete the transfer assessment

Before relying on the IDTA or Addendum, carry out a transfer risk assessment. Consider the nature and sensitivity of the data, the purpose and duration of processing, the destination country's legal framework, the recipient's technical and organisational controls, and the possibility of public authority access. Record the evidence and any supplementary measures, such as encryption, pseudonymisation, access restrictions, stronger logging or shorter retention periods.

Operate and review the arrangement

International transfer compliance is an ongoing process, not a document signed once. Include the transfer mechanism in the data inventory, supplier due diligence and sub-processor approval process. Set an owner and review trigger for changes to the destination, supplier, processing purpose, security controls or relevant law. The Data (Use and Access) Act 2025 changes parts of the UK data protection framework, but businesses still need to apply the UK GDPR's international transfer rules and maintain appropriate records. A practical next step is to create a transfer register showing each destination, safeguard, assessment date, responsible owner and review date.