Drafting confidentiality agreements for business partnerships

Why a mutual NDA matters when two businesses talk

Whenever two organisations start exploring a partnership, a joint venture, or a serious collaboration, information starts flowing. Pricing models, customer lists, technical roadmaps, supplier terms, marketing plans — the sort of material that would be damaging in the wrong hands. A mutual non-disclosure agreement (sometimes called a bilateral NDA, or a mutual confidentiality agreement) puts a sensible framework around that exchange so both sides can talk openly without constant worry.

The word "mutual" is doing a lot of work here. A one-way NDA protects only the party disclosing information. A mutual agreement recognises that in a genuine partnership discussion, both sides will share sensitive material, and both deserve the same protection. It’s a fairer starting point and, in practice, easier to negotiate because neither side feels exposed.

Getting the definition of confidential information right

This is the clause most likely to cause trouble later, so it’s worth drafting with care. A good definition is broad enough to cover what you actually share, but clear enough that both parties know what they’re signing up to.

• Cover the obvious categories — financial data, customer and client lists, pricing, technical specifications, source code, business plans, unpublished marketing strategies, and details of the proposed partnership itself.
• Include information in any form — written, verbal, visual, electronic, or even what someone observes on a site visit. Verbal disclosures are routinely forgotten in badly drafted agreements.
• Note how it’s identified — many agreements require written information to be marked "confidential" and verbal disclosures to be confirmed in writing within a set period, often 14 or 30 days. If you skip this, you may struggle to prove something was confidential.
• Carve out the standard exclusions — information already public, already known to the receiving party, independently developed, or required to be disclosed by law or a regulator.

Be realistic rather than greedy. An overreaching definition that claims everything under the sun is confidential looks unprofessional and invites pushback that slows the whole deal down.

Setting the right duration and scope of use

Confidentiality obligations shouldn’t last forever, but they should last long enough to matter. For most commercial partnerships, a term of three to five years from the date of disclosure is common. Where trade secrets are involved — a proprietary process, for example — you may want the obligation to continue indefinitely for that specific category.

Just as important is the purpose limitation. The receiving party should only be allowed to use the information to evaluate or pursue the proposed partnership, and for nothing else. Without this, a partner could technically take your customer insights and use them in a completely unrelated part of their business. Also spell out who inside each organisation may see the information — usually directors, employees, and professional advisers who genuinely need it — and require that those people are bound by equivalent obligations.

Practical points UK freelancers often miss

Sole traders and small limited companies sometimes treat NDAs as a formality and sign whatever lands in their inbox. That’s understandable when you want to get on with the work, but a few minutes of reading saves a lot of grief.

• Check who the parties actually are. If you’re a limited company, the agreement should name the company, not you personally. Signing personally can leave you exposed if the business later folds.
• Look for non-solicitation or non-compete clauses smuggled in alongside confidentiality. These restrict your freedom to work with other clients and deserve separate scrutiny.
• Confirm the governing law and jurisdiction. For a UK business dealing with an overseas partner, agreeing English law and courts is usually the simplest option, but it needs to be stated.
• Decide what happens on termination. The agreement should say whether the receiving party must return or destroy the information, and what happens to any copies held in backups.
• Watch for residual knowledge clauses. These let the other side use anything their staff simply remember. They’re common in technology deals and can weaken your protection considerably.

What to do when the other side sends their template

Nine times out of ten, the first draft will be the other party’s standard NDA, and it will be weighted in their favour. Read it against the points above and mark up anything that feels unbalanced. It’s perfectly normal to propose changes — a mutual clause here, a shorter term there — and reasonable partners expect it.

Keep a short, plain-English version of your own template ready to go. When you’re the one introducing the agreement, you set the tone, and the negotiation tends to go faster. If the deal is significant, or the information genuinely sensitive, a solicitor’s review of a two-page NDA is inexpensive compared with the cost of a leak.

Making the agreement work in practice

Once it’s signed, don’t file it and forget it. Label documents clearly, keep a simple log of what you’ve shared with whom, and remind your team which clients and partners are covered by which agreement. If a disclosure does happen, having a paper trail makes it far easier to act quickly and demonstrate that you took your obligations seriously.

A well-drafted mutual NDA isn’t a sign of distrust. It’s the opposite — it’s what allows two businesses to be candid with each other, share the detail that makes a partnership worthwhile, and move forward with confidence. Get the basics right at the start and the rest of the relationship is much easier to build.