Is OneDrive GDPR Compliant in the UK?

If you run a small business, there’s a good chance you’re already using cloud storage (or you’re thinking about it). It’s convenient, it scales as you grow, and it makes hybrid working much easier.

But once you’re storing customer details, employee records, contracts, or anything else that identifies a person, the legal question kicks in:

Is OneDrive GDPR compliant?

The reassuring answer is that OneDrive can be used in a UK GDPR-compliant way by UK businesses, but it’s not a “set and forget” situation. UK GDPR compliance isn’t a sticker a tool can wear - it’s about how your business uses the tool, what settings you apply, what agreements you have in place (especially around any international access), and whether you can evidence good data protection practices.

Below, we’ll walk you through what “GDPR compliant” really means in practice, how OneDrive fits into the picture, and what you should put in place to protect your business from unnecessary UK GDPR risk.

What Does “GDPR Compliant” Actually Mean For Cloud Storage?

When people ask whether OneDrive is “GDPR compliant”, they’re usually trying to confirm one of these things:

• Can we legally store personal data in OneDrive?
• Will we get fined if we use OneDrive?
• Does using OneDrive automatically make us compliant?
• What paperwork and settings do we need if we use it at work?

In the UK, the key legal framework is the UK GDPR (which sits alongside the Data Protection Act 2018). At a high level, UK GDPR requires you to:

• Process personal data lawfully, fairly and transparently (you need a lawful basis and you need to explain what you’re doing in plain English).
• Only collect what you need and only keep it for as long as you need it.
• Keep personal data secure using appropriate technical and organisational measures.
• Use suppliers carefully (including cloud providers), with the right contracts and due diligence.
• Respect people’s rights (like access requests, deletion requests, and correcting data).

So, cloud storage tools aren’t “GDPR compliant” by default. Instead, UK GDPR expects you to ensure:

• the provider offers adequate security and controls; and
• your business configures and uses the service in a compliant way.

This is why, in practice, the better question is often:

Can we use OneDrive in a way that meets our UK GDPR obligations?

Is OneDrive GDPR Compliant For UK Businesses?

For most UK small businesses, yes - OneDrive can be used in a UK GDPR-compliant way when it’s used with the right settings and the right contractual protections (including, where relevant, the right international transfer safeguards).

OneDrive is typically used as part of a wider business environment, where the provider supplies cloud storage and supporting security features, and your business decides:

• what you store;
• who has access;
• how long it is retained;
• who it is shared with; and
• how you respond to any data rights requests or incidents.

That distinction matters, because under UK GDPR, your business will usually be the data controller for most of the personal data you put into OneDrive (customer records, employee details, client files, etc.). The provider will often act as a data processor (processing the data on your behalf, in line with your instructions).

Being the controller means the “buck” largely stops with you. Even if you use a reputable platform, you still need to show you’ve taken compliance seriously.

As a starting point, you should ensure your public-facing documentation accurately describes your use of cloud services and data storage - for many businesses, that means having an up-to-date Privacy Policy that matches what you actually do.

When OneDrive May Be A Good Fit

OneDrive may be a sensible option where you need secure storage and collaboration features and you can implement:

• strong access control (including multi-factor authentication);
• clear sharing rules (so staff don’t accidentally share folders publicly);
• retention and deletion practices; and
• business-grade audit logs and admin controls.

When You Should Be More Cautious

You’ll want to be extra careful if you handle:

• special category data (e.g. health information, biometric data, religious beliefs);
• large volumes of personal data;
• children’s data; or
• high-risk datasets (e.g. anything that could cause serious harm if disclosed).

This doesn’t mean you can’t use OneDrive - it just means you may need stronger controls, clearer governance, and potentially a DPIA (Data Protection Impact Assessment).

Your Controller vs Processor Obligations (And Why This Matters For OneDrive)

One of the most common compliance gaps we see is businesses relying on a platform’s reputation instead of doing their own UK GDPR groundwork.

Here’s the practical breakdown:

What The Provider Typically Covers

The provider will generally provide the infrastructure and security capabilities (e.g. encryption, access controls, data centres, certifications, admin tools). They may also commit to certain contractual protections in their terms.

What Your Business Still Has To Do

As the controller, you still need to:

• Choose a lawful basis for processing (e.g. contract necessity, legal obligation, legitimate interests).
• Tell people what you’re doing (privacy notices for customers, staff, and other individuals).
• Control access internally (not everyone needs access to everything).
• Set retention rules and actually follow them.
• Manage data subject rights (access, rectification, erasure, restriction, etc.).
• Have the right contracts in place with suppliers who process personal data for you.

That last point is a big one. If OneDrive is processing personal data on your behalf, you usually need a UK GDPR-compliant processor contract (commonly referred to as a DPA). In many cases, the provider’s standard terms include this - but you still need to review and record what you’ve accepted.

For many UK businesses, it’s also helpful to put a proper Data Processing Agreement in place (or at least make sure you’ve accepted terms that include the required UK GDPR clauses).

Key GDPR Risk Areas To Check Before You Store Personal Data In OneDrive

If you want a practical “yes/no” answer to whether OneDrive is a good option from a UK GDPR perspective, the most useful approach is to run through a few risk areas and make sure you can evidence your decisions.

1. Where Is The Data Stored And Is There An International Transfer?

UK GDPR doesn’t ban international data transfers - but it does require safeguards if personal data is transferred outside the UK (and in some cases, outside approved jurisdictions).

In practice, you should check:

• where your OneDrive tenant is configured to store data (data residency options);
• whether support access or sub-processors may involve overseas access; and
• what transfer mechanism applies where data is accessed from (or transferred to) a country without UK adequacy regulations - commonly the UK International Data Transfer Agreement (IDTA) or the EU Standard Contractual Clauses plus the UK Addendum, together with a documented transfer risk assessment where required.

For small businesses, the key is to do reasonable due diligence, document it, and make sure your privacy information reflects reality.

2. Access Controls: Who Can See What?

Many UK GDPR issues aren’t caused by hackers - they’re caused by everyday access mistakes. Examples include:

• a staff member sharing a folder publicly without realising;
• ex-employees still having access after leaving; or
• people saving personal data in the wrong folder with broad permissions.

Practical steps that usually help:

• turn on multi-factor authentication;
• use least-privilege access (only those who need it get it);
• have an offboarding checklist to remove access immediately; and
• restrict external sharing where possible, or require approval.

This is also where internal policies matter. A clear Acceptable Use Policy helps set rules around business accounts, sharing links, personal devices, and what staff should never store in cloud drives.

3. Security Measures And Encryption

UK GDPR doesn’t prescribe a single “correct” security setup. Instead, it says you must implement appropriate measures, taking into account the nature of the data and the risk.

For most businesses, that usually includes:

• strong password standards and MFA;
• device encryption and screen locks for laptops and mobiles;
• regular patching and updates;
• role-based access controls;
• audit logs (so you can investigate if something goes wrong); and
• backups and recovery planning.

If your team uses personal devices to access business OneDrive accounts, make sure your approach is consistent with your wider UK GDPR obligations. (This often becomes a “people and process” issue, not just a technical one.)

4. Retention: Are You Keeping Data Longer Than You Should?

Cloud storage makes it easy to keep everything forever - but UK GDPR expects you to keep personal data only for as long as necessary.

So you’ll want to decide:

• how long you keep different categories of documents (e.g. HR files vs customer files);
• how deletion works in practice (including archived folders and backups); and
• who is responsible internally for ongoing “data housekeeping”.

A retention schedule doesn’t need to be complicated, but you should be able to explain it and apply it. If you want a benchmark for thinking about timeframes, it’s helpful to start with practical guidance like data retention periods and tailor it to your business model and legal obligations.

5. Breach Readiness: What Happens If Something Goes Wrong?

Even with great security, incidents can still happen - for example:

• a staff member shares the wrong file externally;
• a device is stolen while logged in; or
• you discover suspicious logins.

Under UK GDPR, you may need to notify the ICO within 72 hours if the breach is likely to risk people’s rights and freedoms. You might also need to notify affected individuals in serious cases.

That’s why it’s worth having a clear, step-by-step Data Breach Response Plan, even if you’re a small team. It reduces panic and helps you respond consistently and quickly.

A Practical OneDrive GDPR Compliance Checklist For Small Businesses

If you’re trying to get comfortable that OneDrive is set up safely, here’s a practical checklist you can work through. (You don’t need to over-engineer it - just start with the areas that match your risk.)

Governance And Paperwork

• Identify what personal data your business stores in OneDrive (customers, staff, suppliers, etc.).
• Confirm your role (usually controller) and the provider’s role (usually processor).
• Check you have appropriate processor terms in place and that you’ve documented them (DPA clauses, sub-processors, and security commitments).
• Check whether your setup involves international transfers or overseas access, and if so, document the safeguards you rely on (for example, UK IDTA or the UK Addendum to EU SCCs) and any transfer risk assessment you carry out.
• Update your privacy documentation so it clearly reflects your storage/processing practices (including cloud storage).
• Keep an internal record of processing (even a simple version is better than nothing).

Configuration And Access

• Turn on multi-factor authentication for all users.
• Use role-based access and least-privilege permissions.
• Restrict external sharing and require expiry dates where possible.
• Have an offboarding process to remove access immediately when someone leaves.
• Use audit logging so you can track access and sharing.

Security And Staff Behaviour

• Make sure staff understand what can and can’t be stored in shared drives.
• Train staff not to email/share files unnecessarily when secure links are available.
• Secure devices used for access (passwords, encryption, updates).
• Consider whether you need mobile device management for higher-risk data.

Retention And Deletion

• Set retention periods for key document categories.
• Implement a process to delete or archive data that is no longer needed.
• Ensure deleted data isn’t still accessible via shared links or copied folders.

Incident Response

• Have a clear internal process to escalate suspected breaches fast.
• Know how to access sharing logs and revoke links quickly.
• Keep a decision-making process for whether the ICO must be notified (and when individuals should be notified).

If you’re building (or tightening up) your overall UK GDPR posture, many small businesses prefer to take a “package” approach rather than piecing it together over time - for example, having a structured GDPR Package so your documents and processes actually match how you operate.

Common Mistakes That Create GDPR Risk When Using OneDrive

Most UK GDPR problems we see aren’t caused by a platform being “non-compliant”. They’re caused by gaps in setup and internal habits.

Here are some common pitfalls to avoid:

• Assuming the tool handles compliance for you: UK GDPR compliance is shared - you still have controller obligations.
• Over-sharing internally: giving everyone access to everything increases the risk of accidental disclosure.
• Uncontrolled external sharing: public links, no expiry dates, and no tracking is a recipe for trouble.
• No retention policy: storing old CVs, old client files, and outdated customer lists indefinitely can breach storage limitation principles.
• No plan for leavers: ex-team members retaining access is a surprisingly common issue.
• Mixing personal and business accounts: staff using personal accounts for work files can quickly create loss-of-control over business data.

A good rule of thumb: if you’d feel uncomfortable explaining your current setup to a regulator or a major client, it’s worth tightening up now - while you still can do it calmly and methodically.

Key Takeaways

• OneDrive can be used in a UK GDPR-compliant way for UK businesses, but compliance depends on how you configure and use it, not just the product itself.
• Your business will usually be the data controller, meaning you remain responsible for lawful processing, data minimisation, retention, and responding to data rights requests.
• You should ensure you have the right contractual protections in place with any provider processing personal data for you (including processor/DPA terms) and, where relevant, international transfer safeguards (such as the UK IDTA or the UK Addendum) supported by a documented transfer risk assessment where required.
• Most practical UK GDPR risk comes from access control and sharing - use least-privilege permissions, MFA, and restrictions on external sharing.
• Retention and deletion still apply in cloud storage, so set retention periods and actively manage old files.
• Have a breach response plan so you can act quickly if personal data is accidentally exposed or accessed.

If you’d like help getting your cloud storage setup and documents aligned with UK GDPR - whether that means reviewing your Privacy Policy, putting the right data processing terms in place, or building a practical compliance process - you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.