Consulting Agreement for Multiple Clients UK | Concurrent Engagements
Managing multiple consulting engagements simultaneously creates complex legal risks around confidentiality, intellectual property ownership, and IR35 status — risks that a generic contract simply cannot address. A Consulting Agreement for Multiple Clients is specifically designed for UK freelancers and independent consultants who work concurrently across several businesses, ensuring each engagement is properly scoped, commercially protected, and tax-compliant. Under Chapter 10 of ITEPA 2003, demonstrating genuine business-to-business relationships across multiple clients is one of the strongest indicators of outside-IR35 status. The agreement also incorporates payment protections under the Late Payment of Commercial Debts Act 1998, safeguarding your cash flow across all engagements. Whether you are a consultant onboarding your first client portfolio or a business engaging specialist expertise, generate a legally robust UK consulting agreement tailored to concurrent client structures now.
Generate your Consulting Agreement free →Key clauses in a Consulting Agreement
Non-Exclusivity and Concurrent Engagements
This clause explicitly confirms the consultant's right to work with multiple clients simultaneously, preventing any single client from claiming exclusivity without express written agreement. Under HMRC's IR35 framework, a genuine right of substitution and the absence of exclusivity are key indicators of self-employment status, making this clause critical for tax compliance.
Confidentiality and Client Separation
This clause imposes robust confidentiality obligations on the consultant, requiring strict information barriers between each client's sensitive data and proprietary information. Without this protection, a consultant handling concurrent engagements in the same sector risks breaching duties of confidence under common law and potentially under the Trade Secrets (Enforcement, etc.) Regulations 2018, exposing both parties to significant liability.
Intellectual Property Ownership
This clause clearly assigns ownership of deliverables created for each specific client engagement, preventing IP disputes when a consultant produces similar work across multiple engagements. Under the Copyright, Designs and Patents Act 1988, copyright in works created by a self-employed contractor vests in the contractor by default, so an explicit written assignment is essential to transfer rights to the commissioning client.
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Generate free →Frequently asked questions
Does working for multiple clients at the same time help me pass an IR35 assessment?
Yes, genuinely working for multiple clients concurrently is one of the strongest indicators of being outside IR35 under HMRC's own guidance, as it demonstrates you operate as an independent business rather than a disguised employee. HMRC's Check Employment Status for Tax (CEST) tool considers whether you are financially dependent on a single engager, so documented multi-client working — supported by separate written agreements — significantly strengthens an outside-IR35 position under Chapter 10 of ITEPA 2003.
Can one of my clients demand I stop working for a competitor during our engagement?
A client can request a non-compete or non-solicitation restriction, but only if it is expressly written into the consulting agreement — UK courts will not imply such terms for independent contractors. Any restriction must be reasonable in scope, geography, and duration to be enforceable under English common law, and overly broad restrictions risk being struck down entirely as an unreasonable restraint of trade.
How does the Late Payment of Commercial Debts Act 1998 protect me when invoicing multiple clients?
The Late Payment of Commercial Debts Act 1998 entitles you to claim statutory interest at 8% above the Bank of England base rate on overdue invoices from business clients, along with fixed debt recovery costs of between £40 and £100 per invoice depending on the amount owed. This right applies automatically to each client engagement, meaning you do not need to negotiate payment penalty terms individually — though including explicit payment terms and due dates in each consulting agreement reinforces your position and simplifies enforcement.
The information on this page is for general informational purposes only and does not constitute legal advice. Contracto generates AI-assisted contract templates — they are not a substitute for advice from a qualified solicitor. For high-value or complex engagements, always seek independent legal review.