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International law firm Spencer West has selected Harvey, which describes itself as the AI operating system for legal and professional services, for use across the firm. The announcement was made in London on 3 November 2026.
Spencer West said it chose Harvey following a pilot and an extensive evaluation of the legal AI market, citing the platform’s breadth of capabilities, jurisdiction-specific research and global support, alongside its purpose-built security and governance. The firm has more than 360 partners across 25 jurisdictions.
Key points
- Spencer West has selected Harvey firmwide, and the platform is being rolled out across its international practice.
- The decision followed a pilot and an extensive evaluation of the legal AI market.
- Harvey will support lawyers working on corporate, litigation and cross-border matters.
- Its uses at the firm span legal research, drafting, contract analysis and document review, alongside AI-powered workflows for complex, recurring legal tasks.
What the pilot showed
According to the announcement, Spencer West partners reported an improvement in their ability to focus on strategic, high-value work during the pilot, with Harvey helping to reduce the time spent on labour-intensive tasks. The firm said that by streamlining time-intensive work, the platform allows lawyers to concentrate more of their efforts on strategic advice, commercial judgement and client relationships.
Spencer West runs a Partner-led structure, which it says gives lawyers the independence to build their own practices while drawing on the expertise, infrastructure and international reach of a global firm.
Simeon Spencer, Senior Partner and Co-Founder at Spencer West, said: “Greater efficiency is one benefit, but we see the potential as much broader.” He added: “As a firm built on seasoned expertise, Harvey is an enabler for our lawyers to deepen client relationships, anticipate emerging challenges and bring their expertise to an even wider range of business needs, on a global scale.”
What Harvey said
Peter Reeve, UK Country Leader at Harvey, said: “We know from the pilot that Harvey has helped Spencer West partners reduce time spent on labour-intensive tasks and focus more closely on strategic advice and client needs.”
Harvey says it is used by at least 3,500 customers in at least 85 countries, and that its backers include Sequoia, Kleiner Perkins, a16z and the OpenAI Startup Fund.
More on Harvey
Earlier Law Week coverage: Harvey’s collaboration with Latham & Watkins and its adoption at Hogan Lovells Cadwalader.