For UK businesses with turnover between £1 million and £50 million, supplier relationships are a vital part of delivering products and materials, maintaining margins, and scaling efficiently. But a poorly drafted or mismanaged supplier contract can quickly become a liability – leading to commercial disputes, legal costs, and operational disruption.
If you’re relying on key suppliers for materials, services, or equipment, your contracts need to be watertight. Here are six warning signs that your supplier agreement could soon cause legal or financial trouble—and what you can do to protect your business before it’s too late.
1. Your supplier contract is vague or overly brief
Many businesses enter into short, templated or informal contracts that gloss over key terms. If your supplier contract lacks clarity or depth, it may not protect you in the event of a dispute.
Key risk indicators:
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No clear description of deliverables or service levels
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No mechanism for handling changes, delays, or substandard performance
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Lack of pricing detail or payment terms
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No mention of jurisdiction, governing law, or dispute resolution
Why it matters: In a contract dispute, the less defined your agreement, the harder it becomes to hold the other party accountable.
Action: Get your contracts professionally reviewed to ensure they clearly define obligations, deadlines, pricing, liabilities, and remedies.
2. There are no measurable performance standards
Vague promises about quality or delivery don’t cut it. Without clear performance benchmarks, your business has little leverage when a supplier underperforms.
What to watch for:
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Service level agreements not included (SLAs) or key performance indicators (KPIs)
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No timeline for delivery or milestone deadlines
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No clause linking performance failures to consequences
Why it matters: If your supplier delays deliveries or sends faulty goods, and the contract doesn’t define what “acceptable” looks like, you may not have legal grounds to terminate or recover losses.
Action: Build measurable standards into the agreement. Use SLAs, technical specifications, or product standards to ensure expectations are enforceable.
3. The termination clause favours the supplier – or doesn’t exist
One-sided termination rights are a major red flag. If your supplier can walk away easily, but you’re locked in for a year or more (even if service is poor), you’re carrying unnecessary risk.
Warning signs:
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Only the supplier has flexible termination rights
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No right to terminate for underperformance
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Unclear or excessive notice periods
Why it matters: If the relationship sours, you need to be able to exit the contract quickly and cleanly – without triggering a dispute.
Action: Ensure your contracts include balanced termination clauses. Add rights to terminate for material breach, persistent underperformance, or non-payment.
4. The contract hasn’t been reviewed by a legal expert
Many supplier contracts are based on templates, copied from previous deals, or negotiated informally – without legal input. This creates hidden risks, especially in high-value or strategic supply arrangements.
Common oversights:
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Broad or unlimited indemnities
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Uncapped liability for your business, but capped for the supplier
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Missing clauses for dispute resolution, jurisdiction, or force majeure
Why it matters: These clauses determine what happens if things go wrong. If they’re not reviewed by someone experienced in UK commercial contract law, you could find yourself exposed.
Action: If a dispute would materially affect your business, have the contract reviewed by a solicitor specialising in commercial law.
5. You’ve already had issues – or are close to one
If you’ve experienced delays, product quality issues, or payment disagreements with a supplier – even if they didn’t escalate into a formal dispute – those incidents are warning lights.
Don’t ignore:
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Repeated late deliveries
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Disputes over invoices or scope
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Escalating email chains or threats of termination
Why it matters: If your supplier relationship is strained, and the contract doesn’t provide clear remedies or protections, you’re vulnerable to operational risk and potential financial loss.
Action: Treat every “near miss” as a prompt to review the contract. Consider amending or replacing it before a minor issue turns into a full-blown legal dispute.
6. There’s no clear dispute resolution process
Too many supplier contracts say nothing about how disputes will be resolved. Others jump straight to litigation – without giving either party a chance to de-escalate or negotiate.
Problems this creates:
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Unpredictable legal costs
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Disruption to business continuity
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Risk of suppliers halting work mid-dispute
Why it matters: Without a structured dispute resolution clause, disagreements can spiral quickly – and your only option may be costly court action.
Action: Add a tiered dispute resolution clause to your contract. Start with informal negotiation, then mediation, with court action or arbitration as a last resort. Also specify jurisdiction and governing law – especially if your supplier is overseas.
Final thoughts: Prevention is better than litigation
A weak supplier contract can undermine years of growth. For businesses with £1M–£50M turnover, even a single supplier dispute can cause serious cash flow issues, reputational damage, and delays.
The good news? Most supplier disputes are preventable.
Get a supplier contract health check
At Tenarys Law, we help UK businesses review, and enforce supplier contracts – especially where the supply chain is critical to revenue.
If you’re managing supplier contracts and experiencing performance issues or disagreements, we offer a tailored Contract Risk Review to identify red flags and help reduce dispute exposure.
