Data‑Sharing Contracts: Clauses You Cannot Leave Out

Sharing data between organisations is a common and sometimes essential part of doing business, whether you’re working with partners, hiring suppliers, or rolling out a new tech feature. But as anyone who’s glanced at the headlines knows, mistakes with data can lead to costly fines, public embarrassment, and loss of customer trust. That's why, whenever you handle personal information-especially between businesses-it's critical to have your legal foundations in place. Enter the data sharing contract.

In this guide, we’ll break down what a Data Sharing Agreement (DSA) actually is, why you need one, and-most importantly-which clauses you simply cannot leave out. If you want to protect your business, stay on the right side of UK data protection law, and build solid partnerships, keep reading.

What Is a Data Sharing Agreement?

A Data Sharing Agreement (sometimes called a DSA or data sharing contract) is a formal contract that lays out in detail how and when organisations can share personal data with each other. It acts as your roadmap for who can access data, for which purposes, and under what strict conditions.

But a DSA isn’t just a bureaucratic box-ticking exercise. It helps you and your partners:

• Stay compliant with the UK GDPR and Data Protection Act 2018
• Set clear rules and expectations around handling sensitive information
• Avoid disputes over who’s responsible for what
• Protect individuals’ rights and safeguard your business’ reputation

In practical terms, a DSA is your evidence that you’ve thought through the risks and put in place strong controls. That’s especially important if the Information Commissioner’s Office (ICO) comes calling-or if there’s ever a data breach and you need to demonstrate accountability.

Are Data Sharing Agreements Legally Required in the UK?

You might be wondering, “Do I legally have to have a data sharing contract every time I share information?” The short answer: not always-but you’ll rarely regret it.

While UK law doesn’t always demand a formal DSA in every scenario, the ICO expects you to use one whenever you’re sharing data on a systematic or ongoing basis, especially with external organisations. If there are multiple parties, sensitive data, or complex processing involved, having a DSA is best practice and a powerful way to prove your business takes data protection seriously.

Without the right agreement, you might struggle to show that you’ve complied with your legal obligations-potentially opening yourself up to enforcement actions or financial penalties. In fact, the ICO guidance specifically recommends DSAs as part of a strong data protection strategy.

So, even if it’s not a strict statutory requirement in every case, think of a DSA as a seatbelt for your business risk: you should be wearing one whenever you set off.

When Do You Need a Data Sharing Agreement?

Any time you plan to share personal data-regularly, occasionally, or even as a one-off-with another business, you’ll want to consider a DSA. Typical scenarios include:

• Partnerships or joint ventures (e.g. healthcare trusts collaborating on research)
• Outsourcing services such as HR, payroll, marketing, or IT support
• Swapping data with third-party suppliers, agents, franchises, or group companies
• Sharing information with regulators, law enforcement, or public authorities

Remember, a DSA isn’t usually required when the sharing happens within the same legal entity (for example, between two departments in one company)-though you should still have robust privacy policies and internal processes in place!

Key Clauses: What Must You Include in a Data Sharing Agreement?

Now let’s get to the heart of the matter: what absolutely needs to be covered in your data sharing contract to make it robust, compliant, and (most importantly) useful.

Here are the essential clauses you should never leave out:

1. The Parties: Who’s Involved?

Start by clearly identifying every organisation, subsidiary, or partner included in the data sharing. State their full legal names, addresses, and company registration details if possible.

• Spell out their roles-are they a data controller, data processor, or joint controller?
• List the main contacts (including any designated Data Protection Officers)

2. Purpose of Data Sharing

Your DSA should answer “why are we sharing this data?” Lay out the precise, lawful reason for data sharing and what each party aims to achieve. For example:

• Carrying out research
• Providing a joint product or service
• Meeting regulatory requirements

Be specific! Vague or open-ended purposes could expose you to compliance risks.

3. Nature and Categories of Data

Describe what types of data will be shared:

• Personal data (names, addresses, email, phone numbers, etc.)
• Special category/sensitive data (health, ethnicity, biometric info…)
• Any relevant identifiers (account numbers, customer IDs, etc.)

This ensures everyone understands the sensitivity and handling rules required for each data set.

4. Lawful Basis for Data Sharing

Under the UK GDPR, you need a solid legal ground for sharing personal data. Your DSA should state exactly which basis applies-such as consent, performance of a contract, legitimate interests, or a legal obligation.

• If you’re relying on legitimate interests or consent, outline how you’ll obtain and record it.
• For joint controllers, explain joint responsibilities (ideally referencing supporting documentation such as a Joint Controller Agreement).

Make sure all parties agree on the basis being relied upon-disagreement here can invalidate the whole arrangement.

5. Data Subject Rights: Upholding Individual Rights

UK individuals (data subjects) have strong rights under the GDPR, including to access, correct, erase or restrict their data. Your DSA needs a clear process for:

• Handling access or deletion requests
• Rectifying inaccurate or outdated information
• Responding to objections or withdrawal of consent
• Providing information to individuals about the sharing (transparency notices)

Tip: Decide in advance which party will handle requests and how you’ll communicate them.

6. Security Measures

One of the cornerstones of good data sharing is robust security. The DSA should:

• Describe technical and organisational measures-encryption, access controls, multi-factor authentication, secure transfer protocols, etc.
• Set out what happens in the event of a data breach (including reporting processes and timelines)
• Require each party to notify the other of incidents or potential exposures

The ICO expects these details to be concrete, not just generic promises of “industry standard” security.

7. Data Retention and Deletion

Your DSA must state:

• How long each party will retain the shared data
• What happens at the end of that period-will data be returned, deleted, or anonymised?
• How deletion or return will be verified and documented

Retention rules should align with your own data retention policy and any relevant law.

8. International Transfers

If any data will leave the UK (for example, to overseas cloud storage or global partners), your agreement must set out:

• Which countries data may be transferred to
• What safeguards are in place, e.g. Standard Contractual Clauses, adequacy decisions, Binding Corporate Rules, or other ICO-approved mechanisms
• How you will monitor and review those safeguards

International transfers are a compliance hotspot and an area where many businesses come unstuck, so this section must be clear and watertight. More on this in our guide to international contracts.

9. Audit, Review, and Compliance Monitoring

It’s not enough to just sign an agreement-you need ways to ensure everyone is living up to their side of the bargain. Include clauses for:

• Regular reviews of the DSA (at least annually or if a major business change occurs)
• Audit rights-can you or the other party check compliance in practice?
• The process for addressing non-compliance or suspected breaches

Routine audits help nip issues in the bud and demonstrate to regulators that you’re proactive.

10. Termination & Exit Arrangements

What if your partnership ends, or the project wraps up early? Your DSA needs a “what happens next” plan, including:

• How and when to stop sharing or accessing the data
• Secure return or permanent deletion of shared data
• Transferring responsibility if data must be retained by one party due to legal obligations
• A process for confirming (in writing) that deletion/return has happened

Clear exit processes prevent unwanted “data drift” and ongoing liability after a relationship has ended.

11. Dispute Resolution

If there’s a disagreement over security, breach responsibility, or data processing, your DSA should set out how you’ll resolve it. This might include:

• An internal complaints process
• Mediation steps before any legal action
• The applicable law and courts (usually England and Wales)

12. Signatures and Agreement Dates

Finally, don’t forget the basics: have each party sign and clearly date the agreement, and ideally list when it should next be reviewed.

What Does a Data Sharing Agreement Example Look Like?

DSAs are tailored to fit each business scenario-there’s no mandatory one-size-fits-all template. However, if you want to see a sample structure, here’s an outline of what a typical DSA might include:

• Background/definitions
• Identification of parties and roles
• Purpose and scope of sharing
• Details of data to be shared
• Legal basis for data sharing
• Confidentiality and security measures
• Data subject rights protocols
• Data retention and deletion
• International transfers (if relevant)
• Audit and review provisions
• Termination and exit arrangements
• Dispute resolution
• Signatures and review timelines

Just remember: using a generic online template or copying a competitor’s DSA is risky. Every data sharing relationship is unique, so your DSA should reflect your specific circumstances, types of data, regulatory risks, and partnership details. For a bespoke agreement, it’s always wise to reach out to a lawyer experienced in data privacy law.

Practical Steps: How Do I Implement a Data Sharing Agreement?

Drafting a strong DSA is about more than covering the legal basics. Here’s how to set your business up for success:

1. Collaborate with Stakeholders: Bring together everyone involved in the data sharing-from IT and compliance to execs and the Data Protection Officer. Get agreement on goals and responsibilities upfront.
2. Tailor for the Risks: Consider the types of data, severity of potential harm, and exposure to regulatory action. The more sensitive or large-scale the sharing, the more enforceable detail you’ll need.
3. Be Transparent with Data Subjects: Update your Privacy Policy so that people know how and why their data is being shared-and with whom. The ICO expects transparency.
4. Train Your Teams: Make sure your staff know their responsibilities under the DSA, including how to report breaches and handle public enquiries.
5. Review Frequently: Data sharing relationships evolve. Set scheduled reviews or trigger points-such as changes in law, business merger/acquisition, or a major data breach.
6. Get Expert Legal Advice: For complex or high-risk sharing, seek help from a specialist. This is especially crucial if you’re sharing special category data, working internationally, or handling large-scale public sector projects.

Do I Need to Tell the ICO or Register My Data Sharing?

While you’re not generally required to notify the ICO before sharing data, it is important to register as a data controller and be able to demonstrate your data sharing arrangements. The ICO may ask for copies of your DSA if there is a complaint, breach, or investigation.

You should also report serious personal data breaches to the ICO within 72 hours, as well as to the individuals affected, if required by law.

Are There Any Alternatives to a Data Sharing Agreement?

If you’re not sharing data on an ongoing basis, you might consider a more limited document, like a Non-Disclosure Agreement (NDA) for confidential, non-personal data. But for regular or significant sharing of personal information, a DSA is the gold standard.

If you’re appointing a third party to process personal data just for you (rather than sharing for their own or joint purposes), you may also need a Data Processing Agreement.

What Happens If I Don’t Have a Data Sharing Agreement?

Skipping a DSA might save you time upfront-but it puts your business at substantial risk. Without clear, documented terms:

• You may not be able to enforce your rights or get recourse for mistakes
• You’ll struggle to prove legal compliance, which can result in financial penalties from the ICO
• Data breaches, privacy complaints, or disputes can escalate quickly
• Your customers, clients, and business partners may lose confidence in your professionalism

Setting up your legal protections from day one can save you a world of pain down the track.

Key Takeaways

• A Data Sharing Agreement (DSA) sets firm rules for sharing personal data between organisations and helps prove compliance with UK GDPR and Data Protection Act 2018.
• Your DSA must always clearly set out who is involved, what data is shared, why it’s shared, the legal basis, and how individual rights are protected.
• Security, retention, international transfers, dispute resolution, and termination/exit must not be overlooked in your contract.
• DSAs should be tailored for the specific relationship-templates are a starting point, but legal review is highly recommended.
• Having a robust DSA reduces regulatory risk, prevents disputes, and reassures customers.
• Schedule regular reviews of your DSA as your business, partners, or the law evolves.
• If in doubt, consult a data protection lawyer to make sure your contract protects you from day one.

If you want to make sure your data sharing arrangements are watertight, or need help drafting or reviewing a data sharing contract, reach out to the friendly team at Sprintlaw. You can call us on 08081347754 or email team@sprintlaw.co.uk for a free, no-obligations chat about how to protect your business.