UK-based Definely Secures $30M to Transform Legal Workflows

Definely, an AI-powered legal tech company, has raised $30 million in Series B funding to accelerate its global expansion and AI product roadmap.

Growth investor Revaia led the round, which also included Alumni Ventures, Beacon Capital, and the legal tech giant Clio. Early investors, including Octopus Ventures, Zrosk Investment Management, The Raine Group, and Cornerstone VC, also participated. 

The London-based startup’s new $30M Series B funding will accelerate global growth and development of more autonomous workflows.

Definely Meets Lawyers Where They Work

Nnamdi Emelifeonwu and Feargus MacDaeid launched Definely in 2020 after working together at Freshfields. The platform is built for lawyers working under pressure on complex, high-stakes deals. It integrates with Microsoft Word rather than operating on a separate system or platform. 

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The product enables legal professionals to maintain a contextual understanding of legal documents by instantly surfacing relevant information within and across contracts. Using its latest AI product, Enhance, users can achieve at least a 40% speed improvement in their workflows compared to a traditional manual approach.

It offers Vault for AI-driven precedent search, Draft for smart contract review, Proof for AI-enhanced proofreading, and PDF for OCR-enabled analysis. The startup’s innovation, Enhance, is a multi-agent AI system that assigns specialised agents to specific tasks.

Co-founder and CEO Emelifeonwu explained, “With Definely’s latest AI product, Enhance, each model — or agent — specialises in specific tasks, such as summarisation or drafting support. Definely’s agentic system analyses the task, creates a plan, and assigns agents to handle different parts of the task.”

From Lived Experience To Purpose

Both founders brought unique expertise to the venture: Emelifeonwu and MacDaeid were practising lawyers at Freshfields before co-founding Definely. The legal startup was born from the lived experience of co-founder MacDaeid, who is registered blind after being diagnosed with a degenerative eye condition at age 11. He began his career in technology at Compaq and Microsoft before retraining as a lawyer.

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“Throughout his life, he consistently faced challenges in accessing information efficiently. He overcame these by trying different types of technology. His unique professional experience has fundamentally shaped Definely’s product,” Emelifeonwu explained.

Since its launch, Definely has worked closely with customers to create solutions that address real workflow challenges. Today, the platform is trusted by over 100 in-house legal teams and private practice firms, including Magic Circle and White Shoe firms like A&O Shearman, Slaughter and May, DLA Piper, and Dentons, as well as blue-chip companies such as BT Group, Deloitte, and P&O Cruises.

Definely almost tripled its annual recurring revenue (ARR) in 2024, following a rapid increase in customer growth. Now trusted by over 100 in-house legal teams and private practice firms, with a high degree of engagement from all users, thanks to the interoperability of the products with existing workflows. 

Definely’s Path Moving Forward

The London-based startup has gained substantial traction in the US market, which now accounts for 30% of its revenue. The latest fundraising will support further expansion, with key employees moving to the East Coast, where Definely has recently appointed a US-based General Manager. The funding will also be used to further develop new and existing products, with the goal of supercharging legal workflows.

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Morgan Kessous, Partner, Revaia said: “We are proud to lead Definely’s Series B and support a company that is setting the standard for AI-powered legal technology. This investment aligns perfectly with our belief in the transformative power of vertical AI. With enterprise-grade products already live and gaining strong traction, Definely is accelerating its AI roadmap and international expansion – a journey we are excited to support.”

The round was a significant milestone for Revaia as the transaction was its first investment in the UK since opening its London office.

Meanwhile, Emelifeonwu says, “This latest investment round is a testament to the hard work of an incredible team and our customers’ trust in us. As a business, we are deeply committed to building human-first products and leveraging generative AI not for its own sake but to solve real and tangible problems that lawyers face today. As a former lawyer myself, I witnessed these problems firsthand.”

This additional funding brings Definely’s total amount raised since its inception to $40 million. The company currently has 84 employees, which is projected to surpass 100 in H2 2025. 

Diversity remains central to the startup: 34.1% of the team is ethnically diverse (compared to 10-15% at similar-sized tech companies), 33.1% are women, 14% are women in tech roles, and the leadership team is 27% female and 45% ethnically diverse.

Main Image: From L-R, Nnamdi Emelifeonwu and Feargus MacDaeid, Definely cofounders. Image Credit: Definely