Your data stays within
your premises
Legal AI installed physically in your firm. Confidentiality, offline operation, control of your data. Hardware included.
per month
your premises
internet
training
Your client files stay
inside your firm. Full stop.
The SRA's August 2026 warning notice says firms should be satisfied that client data stays in a secure environment and is not accessed by unauthorised third parties. With LegisBox Private, the hardware is in your office. You can see it, touch it and disconnect it.
Legal professional privilege protected
Your client data stays within your network, so privilege cannot be waived by an upload to a third party. LPP and AI explained →
Built around the SRA Code of Conduct
Your data stays in your practice, not with a third-party host. Designed to meet your confidentiality and data security obligations. SRA Code of Conduct →
Works without internet
Case file analysis, local case law search and drafting all work offline. The connection is only used for nightly updates to BAILII, legislation.gov.uk and Find Case Law.
Using ChatGPT with client files? Read the SRA AI misuse guide before you continue →
Everything a solicitor needs,
processed in your premises
LegisBox Private brings research, drafting, spreadsheets, diary and client portal into one tool. Everything is processed locally, so your data stays within your network.
Lex chat: your AI legal assistant
Lex consults your firm's case files before it answers. Transparent reasoning log, automatic detection of limitation periods and CPR deadlines, long-term memory for each matter. Local processing.
Case law and legislation research
BAILII, legislation.gov.uk, Find Case Law, ICO decisions and SRA guidance, refreshed every night and indexed locally. Lex cites the exact section and the judgment it relies on.
Opponent mode and citation checks
Lex attacks your clauses the way opposing counsel would. It checks that the authorities you cite exist and remain good law, and flags internal contradictions. Processed locally.
Lex PDF: an active viewer
Much more than a reader: Lex analyses every document as you open it. Built-in text recognition, critical-clause badges, shared annotations, two-PDF comparison and a .docx summary export. Data stays local.
Discover Lex PDF →Translation in 26 languages, including scans
Translate foreign-language documents with a legal relevance summary. Arabic, Mandarin, French, Spanish and more. Available from the PDF viewer, Word, Excel and Lex chat, processed locally.
Tabular review
Analyse up to 20 PDFs at once. Lex extracts structured data from each document and builds an exportable Excel table. Ideal for due diligence and contract audits, with data kept local.
Lex Word: legal drafting
A Lex panel in the Word ribbon. Analyse, generate, improve and check your documents without leaving Word. Standard clause templates, track changes mode, executive summary and automatic table of contents.
Discover Lex Word →Lex Excel: legal calculations
Smart legal formulas in Excel: statutory interest, damages and costs calculations, automatic risk scoring with colour-coded cells. Ready-to-use legal templates, processed locally.
Discover Lex Excel →LexPrivacy: pseudonymisation
Pseudonymise documents before they go to any outside AI. On LegisBox Private your data stays within your network, and LexPrivacy remains available for what you exchange with third parties.
Discover LexPrivacy →Matter management
Matters organised by practice area. Private, shared or firm-wide visibility, member management, a complete audit log, real-time notifications and smart lists. Processed locally.
Smart diary and deadline alerts
Google Calendar and Outlook sync. Procedural deadlines are detected automatically in your matters. Alerts at 7, 3 and 1 day, configurable. Available from court.
Roles and permissions
Distinct roles for firm administrators, solicitors and fee earners. Granular permissions for each matter and a complete administration dashboard.
A flat fee for the firm,
hardware included
One fixed monthly price according to the size of your firm. Hardware, installation, training and maintenance included. 36-month commitment.
- All LegisBox features
- BAILII + legislation.gov.uk + Find Case Law
- Unlimited case file analysis
- Smart diary + email alerts
- Installation + training included
- Maintenance and updates included
- Everything in Solo
- Predictive litigation analysis
- Semantic contract comparison
- AI pre-hearing briefing summary
- Court diary + Outlook sync
- Priority support
- Everything in Professional
- Multi-machine infrastructure
- Automatic load balancing
- Granular matter-level permissions
- Firm profitability dashboard
- Dedicated support
A larger firm or a tailored set-up? Contact us for a bespoke offer →
Two versions,
the same assistant
Private or Cloud: both give you the same Lex features. The difference is where your data is processed.
- AI box installed physically in your firm
- Data inside your network
- Works fully offline
- Designed to need no external pseudonymisation
- All Lex features included
- Hardware, installation and maintenance included
- Instant access from your browser
- No hardware, no installation
- Data hosted in Nuremberg, Germany, within the EU
- Automatic LexPrivacy pseudonymisation
- All Lex features included
- Free demo, no commitment
See the full comparison with Harvey AI, CoCounsel and ChatGPT →
Frequently asked questions
Ready to see LegisBox Private
in your firm?
A personalised demonstration at your premises, with your real case files. Free, with no commitment.
Book a free demo →