A specialist commercial law firm advising businesses across corporate transactions, dispute resolution, data protection, privacy, AI governance, life sciences, intellectual property, technology law, and corporate immigration. Based in Mayfair, London.
At Bart Harper, we advise businesses at the moments that matter most. Whether you are completing an acquisition, navigating a regulatory investigation, resolving a commercial dispute, managing a cross-border workforce, or building the legal infrastructure for a technology product, we bring the commercial precision and specialist depth your situation requires.
Our practice spans corporate transactions, dispute resolution, data protection and privacy, AI governance, life sciences, intellectual property, technology contracts, commercial property, corporate immigration and mobility, and business advisory work. What runs through all of it is a depth of specialism in data, privacy, and AI that few commercial firms can match. These are no longer niche disciplines. They define how businesses are valued, how contracts are structured, how disputes arise, and how regulators intervene.
We are typically engaged at pivotal points: a fundraise, a product launch, a regulatory challenge, a workforce restructuring, or a dispute with reputational and financial consequences. Our advice is direct, commercially focused, and designed to support confident decision-making at board level.
Where most firms treat data protection and AI governance as bolt-on services, we embed them at the centre of every commercial mandate. That depth means we identify risks in transactions, disputes, and contracts that generalist advisers routinely overlook.
We understand that legal compliance must align with business objectives. Our advice balances regulatory requirements with commercial realities and operational constraints.
Our clients benefit from direct access to senior legal expertise without layers of bureaucracy, ensuring swift responses and consistent quality throughout every engagement.
With extensive cross-jurisdictional experience across the UK, EU, EMEA, and Asia, we provide the international insight needed to support businesses operating across borders.
We do not just react to problems. We help you anticipate challenges, assess risks, identify opportunities, and build robust frameworks that support sustainable growth.
We invest in understanding your business deeply, becoming a trusted advisor who grows with you and provides continuity as your needs evolve.
Tailored solutions designed to meet the evolving needs of modern businesses
Our practice areas reflect the reality that data, privacy, and AI now sit at the heart of every significant commercial decision. Each service we offer is shaped by that expertise.
Company formations, business acquisitions, management buyouts, joint ventures, and shareholder agreements. We bring deep regulatory and data law awareness to every corporate mandate.
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Legal support for healthcare providers, life sciences businesses, and health technology companies navigating complex regulatory, contractual, and data governance obligations.
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GDPR and UK GDPR compliance, privacy programme design, DPIA, DSAR management, ICO liaison, data breach response, and cybersecurity legal support. This is not a standalone service: it informs everything we do.
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Protection and commercialisation of intellectual property assets, including licensing, assignments, IP due diligence in transactions, and enforcement.
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Strategic representation in High Court proceedings, institutional arbitration, mediation, and regulatory investigations, including complex data, technology, and commercial disputes.
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Technology licensing, SaaS agreements, master service agreements, platform terms, and AI deployment contracts, drafted with the commercial precision and regulatory depth that modern technology businesses require.
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Transactional and advisory support on commercial leases, property acquisitions, and landlord and tenant matters, including technology and data centre property instructions.
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Ongoing strategic legal counsel for founders, boards, and management teams, covering governance, investment readiness, regulatory strategy, and cross-practice risk management.
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Practical guidance on AI regulation, algorithmic accountability, AI procurement, and governance frameworks, drawing on deep technical and regulatory expertise at the intersection of law and emerging technology.
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Independent DPO function with strategic privacy programme leadership, regulatory liaison, and board-level reporting for organisations that require senior expertise without an in-house appointment.
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End-to-end immigration and global mobility support for businesses sponsoring overseas talent, managing cross-border workforce deployments, and navigating UK visa and right-to-work requirements.
Learn More →A structured, collaborative approach designed to deliver exceptional results
We begin with a comprehensive consultation to understand your business, objectives, and specific legal requirements. This allows us to assess the scope of work, understand the organisational culture and provide clear guidance on how we can support you.
Following our initial discussion, we provide a detailed proposal outlining our recommended approach, scope of services, timeline, and transparent fee structure. Once agreed, we formalise the engagement with clear terms of reference.
We conduct thorough analysis of your current position, identifying risks, opportunities, and compliance gaps. This includes reviewing existing documentation, assessing processes, and understanding your operational context.
Based on our findings, we develop clear, practical strategies that address your specific needs. We present our recommendations with detailed rationale and discuss implementation considerations.
We provide hands-on support throughout implementation, including drafting documentation, developing policies, coordinating with stakeholders, and ensuring smooth execution of agreed strategies.
Beyond initial implementation, we remain available for ongoing guidance, regulatory updates, and support as your business evolves. Many clients choose to retain us for continuous advisory services.
Authorised and regulated by the Solicitors Regulation Authority (SRA), ensuring the highest professional standards and client protections.
SRA ID: 8009204
CIPP/E certified team
Over 15 years of experience advising businesses across corporate transactions, commercial disputes, data protection, privacy, AI governance, life sciences, technology law, and corporate immigration, serving clients across multiple sectors and jurisdictions.
Recognised expertise in emerging legal challenges
Extensive cross-jurisdictional experience supporting businesses with operations across the UK, EU, EMEA, and Asia-Pacific regions.
Global perspective with local insight
Whether you are navigating a corporate transaction, managing a commercial dispute, responding to a regulatory challenge, planning a cross-border workforce move, or building the legal foundations for a technology business, we provide clear, strategic advice at every stage.
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