Definely is an enterprise UK LegalTech provider founded in London by former corporate solicitors Nnamdi Emelifeonwu and Feargus MacDaeid. Purpose-built to eliminate cognitive fatigue and context-switching during transactional drafting, Definely embeds an AI-powered drafting, proofreading, and precedent discovery assistant directly into Microsoft Word. Today, it is deployed across Magic Circle law firms including Slaughter and May and A&O Shearman, global powerhouses like Dentons and Deloitte, and leading UK corporate legal departments.
The Definely AI Suite: Architectural Modules
Rather than forcing lawyers to abandon Microsoft Word for a standalone browser platform, Definely functions entirely inside Word. Its unified suite of five integrated modules covers the pre-execution contract lifecycle from initial drafting to final signature:
1. Definely Draft: In-Line Definition & Cross-Reference Navigation
The foundational application that established Definely's reputation. Transactional agreements frequently span hundreds of pages with intricate definition schedules and complex cross-references. Definely Draft allows lawyers to simply double-click any defined term or referenced clause to open an instant split-screen viewing drawer. Practitioners can review the exact definition, edit referenced text in place, and track modifications using Microsoft Word's native Track Changes, avoiding disjointed vertical scrolling.
- Instant definition lookup without losing cursor position or context
- Split-screen editing for definitions and referenced provisions
- Multi-document navigation across complex transaction bibles and schedules
- Real-time verification of defined, undefined, and unused terms
2. Definely Proof: AI Legal Quality Control & Risk Mitigation
Definely Proof provides an automated legal proofreading engine that inspects complex contractual syntax. Unlike generic consumer spelling tools, Definely Proof scans for high-risk legal discrepancies, missing cross-references, and drafting errors before documents reach clients or counterparties.
- Pinpoints broken cross-references, repeated definitions, and numbering errors
- Detects leftover drafting placeholders, bracketed text, and internal author notes
- Validates defined term capitalization and pluralisation consistency throughout
- Enforces bespoke law firm House Style guidelines and formatting rules
⚡ Native Microsoft Word Workflow Architecture
Definely operates as a certified Microsoft 365 add-in, integrating directly into Word ribbons on both Windows and macOS. By anchoring all AI operations directly within the lawyer's primary authoring environment, it eliminates document exporting, re-formatting errors, and the compliance hazards associated with copying confidential client clauses into external browser windows.
3. Definely Vault: Semantic Precedent Retrieval
Definely Vault transforms a law firm's Document Management System (DMS) into an accessible, semantic precedent repository. Rather than searching across scattered folders or relying on colleagues' email chains, Vault identifies relevant historical clauses, definitions, and deal structures directly inside Word.
- Natural language semantic search across historical deal repositories
- Direct integration with iManage, NetDocuments, and Microsoft SharePoint
- One-click insertion of verified precedent clauses into active drafts
- Preserves institutional deal memory across transactional teams
4. Definely PDF: Non-Editable Document Due Diligence
Definely PDF brings split-screen definition lookup and cross-reference navigation to non-editable PDF files. Powered by optical character recognition (OCR), it enables transactional teams to dissect counterparties' markups, executed agreements, and due diligence disclosure bundles with identical ease.
- One-click definition and cross-reference lookup on scanned PDF documents
- Accelerates M&A due diligence and counterpart contract analysis
- Exportable audit reports detailing all identified definitions and references
5. Definely Enhance: Agentic AI Co-pilot
Definely Enhance acts as an agentic AI drafting assistant layered across Word. Using specialised legal agent workflows, it assists lawyers with complex tasks such as translating business terms into standard legal provisions, generating executive summaries of markups, and cross-comparing clauses against firm precedent standards under strict human-in-the-loop governance.
- Automated clause redrafting guided by user-specified deal parameters
- Executive summarisation of dense transactional schedules
- Human-in-the-loop architecture ensuring no edits apply without solicitor review
Technical Specifications
| Specification Domain | Technical Details |
|---|---|
| Client Environment | Microsoft 365 Word Add-in (Windows 10/11, macOS, and Word Online). |
| DMS Connectors | iManage Work 10, NetDocuments, OpenText, and Microsoft SharePoint. |
| Security Certifications | ISO/IEC 27001 certified, SOC 2 Type II certified. |
| Cloud Hosting Infrastructure | Microsoft Azure UK South (London) & Azure UK West (Cardiff) sovereign cloud. |
| Data Privacy Standards | UK GDPR, Data Protection Act 2018; zero client data retention for LLM training. |
2026 Pricing Matrix & Enterprise Tiers (UK Focus)
Definely operates an enterprise quote-based pricing model calibrated by user seat volume, selected software modules, and DMS integration complexity. While pricing is tailored per organization, UK legal market benchmarks indicate the following tier structure:
| Subscription Tier | Annual Commitment | Monthly Equivalent (ex VAT) | Core Entitlements & Capabilities | Recommended User Profile |
|---|---|---|---|---|
| Modular Pilot | From £780 / user / year | ~£65 / user / month | Single-module deployment (Definely Draft or Definely Proof); Word add-in; standard email support; Azure UK cloud hosting. | Boutique UK law firms or single transactional teams conducting pilot trials. |
| Professional Suite | From £1,080 / user / year | ~£90 / user / month | Integrated core suite (Draft, Proof, and PDF); multi-document navigation; custom house style rule builder; iManage / NetDocuments connector. | Mid-market UK commercial firms and in-house corporate legal teams (10 to 50 lawyers). |
| Enterprise / Magic Circle | Custom bespoke quotation | Bespoke enterprise pricing | Complete 5-module platform (Draft, Proof, Vault, PDF, Enhance); dedicated Customer Success Manager; bespoke DMS mapping; UK sovereign tenant isolation; custom SLA. | Magic Circle, Top 50 UK law firms, and multinational corporate legal departments. |
*Pricing figures reflect prevailing UK enterprise market rates (excluding VAT). Multi-year commitments and firm-wide licensing unlock progressive volume discounting.
UK Regulatory Compliance & SRA Alignment
Law firms regulated by the Solicitors Regulation Authority (SRA) and in-house teams answering to General Counsel operate under stringent professional duties regarding client confidentiality, technology governance, and output verification:
| Regulatory Requirement | Legal Standard | Definely Implementation | UK Legal Firm Impact |
|---|---|---|---|
| SRA Professional Conduct | SRA Standards & Regulations (Rules 2.1 & 3.3) | User-in-the-loop architecture; AI suggestions require explicit solicitor approval; full auditability via native MS Word Track Changes. | Solicitors retain complete supervisory governance over every amendment. |
| Client Privilege & Model Training | UK GDPR Art. 5(1)(f) & SRA Principle 7 | Zero-retention policy; privileged client contracts and deal terms are never used to train external or shared foundation models. | Eliminates risk of privileged advice leaking into public AI training data. |
| Data Residency & Sovereignty | UK GDPR Chapter V & DPA 2018 | Primary cloud instances hosted on Microsoft Azure UK South (London) with customer-managed encryption key (CMEK) options. | Complies with UK domestic data sovereignty rules without complex cross-border transfer assessments. |
| Information Security | ISO/IEC 27001 & SOC 2 Type II | TLS 1.3 encryption in transit, AES-256 at rest, annual independent penetration testing, and granular role-based access. | Passes law firm IT security procurement and corporate client security audits. |
| Precedent IP Isolation | UK Copyright & IP Protection | Definely Vault searches solely within the firm's private DMS boundary, isolating internal knowledge assets from other clients. | Safeguards proprietary drafting templates and firm-specific know-how. |
UK Legal Sector Use Cases
1. Magic Circle & Top 50 Corporate Law Firms
In major M&A transactions, cross-border joint ventures, and leveraged finance deals, agreements frequently exceed 150 pages with hundreds of definitions. Trainees and associates use Definely Draft and Proof to review cross-references and eliminate drafting errors in minutes rather than spending entire evenings manually flipping between schedules. Partners report higher work quality and fewer post-execution amendments.
2. Mid-Market Commercial Law Firms
Regional UK commercial firms handling corporate restructuring, commercial property, and employment disputes leverage Definely Vault to accelerate first-draft turnaround times. By surfacing verified historical precedents directly within Word, mid-tier firms deliver institutional-quality documentation at competitive fixed-fee pricing.
3. FTSE 250 In-House Corporate Legal Departments
In-house legal teams at financial institutions, utility providers, and technology vendors face relentless contract volume with lean staffing. In-house counsel utilise Definely Proof to triage third-party supplier agreements, identify counterparty deviations from standard house templates, and ensure key defined terms are properly aligned before commercial sign-off.
Alternatives to Definely
While Definely provides an unmatched MS Word-native drafting and proofreading experience, UK legal practitioners evaluating the market should consider how it compares to alternative legal AI platforms:
| Platform | Primary Focus | Workflow Modality | Key Differentiator vs Definely |
|---|---|---|---|
| Definely | Contract drafting, proofreading & precedent access | Native Microsoft Word Add-in | Deepest Word split-screen definition and proofreading experience. |
| Robin AI | Contract review, playbook redlining & human-in-the-loop | Web App & Word Add-in | Combines Anthropic Claude models with an in-house legal review team. |
| Luminance | AI contract intelligence, due diligence & e-discovery | Proprietary Legal LLM Platform | Broader due diligence document indexing and counterparty negotiation. |
| Harvey AI | Generative legal research, contract analysis & drafting | Enterprise AI Portal | High-end OpenAI-backed research co-pilot across extensive enterprise data. |
| Lexis+ AI | Authoritative legal research & citation-backed drafting | LexisNexis Research Suite | Deep primary UK case law, statutory authorities, and Halsbury's Laws integration. |
Pros & Cons for UK Legal Professionals
✔ Platform Strengths
- Native Microsoft Word add-in eliminates constant tab switching and context loss
- Instant split-screen definition and cross-reference editing with native Track Changes
- Proven time savings exceeding 60 minutes per day per transactional fee-earner
- Definely Proof catches high-risk numbering, definition, and drafting bracket errors
- Definely Vault leverages institutional deal history from iManage and NetDocuments
- Strict UK GDPR, ISO 27001, and SOC 2 Type II compliance with UK Azure data hosting
- Zero retention policy ensures client documents are never used for external AI training
✘ Platform Limitations
- Enterprise quote-based pricing represents a major investment for smaller partnerships
- Strictly engineered for the Microsoft 365 ecosystem (no standalone Google Docs app)
- DMS integration setup requires coordination with firm IT and information security teams
- Focused on transactional drafting and proofreading rather than deep case law research
- Cultural adoption requires departmental heads to actively encourage fee-earner uptake
UK Law Firm Case Study
A 75-lawyer commercial law firm based in the City of London deployed Definely's complete suite across its Corporate M&A, Banking, and Commercial Property departments. Prior to rollout, associates spent substantial non-billable hours cross-checking definitions and performing manual proofreading on 80+ page facility agreements and asset purchase contracts.
Documented Implementation Outcomes (6 Months Post-Rollout):
- 62 Minutes Saved Per Fee-Earner Daily: Associates reclaimed over an hour each day by eliminating manual scrolling across lengthy schedules.
- 85% Reduction in Cross-Reference Errors: Definely Proof caught hundreds of numbering and definition inconsistencies prior to client delivery.
- 40% Acceleration in First-Draft Assembly: Definely Vault allowed associates to retrieve precedent provisions directly from iManage Work 10.
- Measurable Fee-Earner Wellbeing Uplift: 78% of junior lawyers reported reduced late-night proofreading stress before deal completions.
"Definely is one of the few legal technology tools that delivers immediate, tangible value on day one. By removing the tedious mechanics of cross-referencing and proofreading, our lawyers spend their time where it matters most: delivering strategic commercial advice to clients." - Head of Knowledge & Innovation, London Commercial Law Firm
Verdict & Recommendation for UK Legal Teams
Definely stands out as one of the most effective, practical, and well-governed LegalTech platforms available for UK transactional lawyers in 2026. Rather than attempting to replace fee-earners with autonomous chatbots, Definely focuses on removing the friction from legal authoring where lawyers spend the majority of their working day: inside Microsoft Word.
We specifically recommend Definely for:
- UK commercial law firms with active Corporate M&A, Banking & Finance, or Real Estate departments
- In-house legal teams at UK enterprises handling high volumes of supplier contracts and complex master services agreements
- Law firms seeking to reduce professional indemnity risk associated with cross-referencing and drafting errors
- Firms requiring strict UK sovereign cloud hosting, SRA compliance, and complete zero-training guarantees
Ready to modernise your firm's contract drafting workflow?
Explore how Definely's Microsoft Word-integrated AI suite saves transactional fee-earners over an hour each day while eliminating costly drafting errors.
Schedule an Enterprise DemoUser Reviews & Industry Feedback
Verified feedback from UK legal practitioners using Definely:
Jonathan P., Partner, Corporate M&A, London
"As someone who regularly leads complex M&A transactions, Definely has been exceptionally effective. The ability to instantly view definitions without scrolling through a 120-page agreement has saved our team countless hours. The Proof tool catches inconsistencies that would have been embarrassing if sent to clients."
Sophia M., Senior In-House Counsel, Financial Services
"Our legal team has used Definely for over a year. The Draft and Proof modules are indispensable for review work. The implementation required coordination with our enterprise IT team for DMS permissions, but the ongoing time savings and error prevention have more than justified the investment."
