On 12 May, Anthropic launched Claude for Legal – a dedicated offering for law firms with more than 20 integrations into the software solicitors already use. Freshfields had already deployed it across thousands of users. For English and Welsh practice, the question is no longer if, but how.
Anthropic – the San Francisco AI company behind Claude – formally launched Claude for Legal on 12 May, a dedicated offering for law firms and in-house teams. It included more than 20 new integrations with the software lawyers already use, twelve practice-area plug-ins covering everything from M&A diligence to employment handbook drafting, and live connections to Thomson Reuters Westlaw, CoCounsel, Harvey, Box, Everlaw, DocuSign and iManage.
The signal for English and Welsh practice is unmistakable: AI in legal services is no longer a question of if, but of how, when, and with what guardrails. This guide is for solicitors who want to move past the hype and start using these tools sensibly.
What Claude actually is – and isn’t
Claude is a large language model. That matters because it shapes what it can be trusted to do. It is excellent at reading, summarising, drafting, comparing and analysing text. It is less reliable when asked to recall specific facts or case citations from memory – a flaw responsible for the now-infamous run of fake authorities appearing in court bundles around the world.
Anthropic’s recent push addresses this head-on through what it calls grounding: Claude’s new connector architecture is designed so that it draws from live, verified sources – Westlaw primary law, CourtListener opinions, an iManage document repository – rather than generating answers from memory. That is a meaningful shift, but it does not change a solicitor’s professional duty: every output still requires human review.
Five practical use cases worth piloting
1. Document review and due diligence. Uploading a data room of contracts and asking Claude to extract change-of-control clauses, governing law provisions or unusual indemnities is now table-stakes. The model handles long documents well and tracks defined terms across exhibits and schedules.
2. First-draft contract production. Claude is strong at producing first drafts of NDAs, engagement letters, employment contracts, settlement agreements and similar templated documents – particularly when given a firm precedent to work from.
3. Legal research and case summarisation. With Westlaw and Practical Law connected, Claude can pull authorities directly and summarise them against the facts of a matter. The integration is the safeguard – without a grounded source, never trust an AI-generated citation.
4. Client correspondence and matter triage. In-house teams in particular have found value in using Claude to triage incoming queries, flag contract requests that need human attention, and draft responses to routine matters.
5. Litigation preparation. Anthropic’s litigation associate plug-in is built for chronology construction from document productions, deposition preparation and brief-section drafting.
The regulatory reality for solicitors
The Solicitors Regulation Authority has taken what it describes as a pro-innovation, outcomes-based approach. There are no AI-specific rules. Instead, the existing Standards and Regulations apply regardless of whether work is done by a solicitor, a paralegal, or a model.
In practice, four obligations matter most when adopting Claude or any similar tool:
- Competence and supervision (Principle 7). A solicitor remains responsible for AI-generated output. Every draft, citation and analysis must be reviewed by a human before it leaves the firm.
- Confidentiality and privilege. Inputting client information into a consumer-grade AI tool may waive legal privilege and breach client confidentiality.
- Data protection (UK GDPR). Where personal data is processed, a Data Protection Impact Assessment is likely required.
- Governance and record-keeping. The SRA expects COLPs to take responsibility when new technology is introduced.
How to pilot it sensibly
For firms beginning the journey, a sensible sequence: start internal (pilot Claude on non-client work first), choose a defined use case, appoint an owner, write a one-page firm policy, and verify every citation without exception.
The bottom line
AI is now a credible tool in the legal toolkit. It is not a replacement for legal judgement, and the firms making the loudest mistakes are the ones treating it as one. But the firms moving thoughtfully – piloting narrow use cases, supervising outputs, training their people, writing down their policies – are pulling ahead, and the gap is widening month by month.
The question for every solicitor in 2026 is no longer whether to engage with this technology. It is whether you can afford to be a year behind the firm down the road that already has.