Harpenden · Hertfordshire · UK

On-Premises AI for UK Law Firms,
Based in Hertfordshire

JD Fortress AI is a UK B2B firm in Harpenden. We install private, on-premises and air-gapped AI so client matter files stay on the firm’s infrastructure — then we support deployments across the UK.

Request a scoped quote

High-street firms (typically under 20 lawyers): from £5,000, scoped to you.

Local base. Nationwide install.

We are not a high-street consumer shopfront. We are a service-area business: based in Harpenden, Hertfordshire, working with Ltd and LLP practices in Hertfordshire, Greater London, and across the United Kingdom.

The first wedge is high-street law firms that need a clean answer for SRA confidentiality: the model runs on hardware you control. No ChatGPT upload. No Copilot path for matter data. See AI for legal teams and our services list.

Public contact: contact@jdfortress.com · 07401 059732 · Harpenden, Hertfordshire, UK.

What we deploy

On-premises AI deployment

Private AI on your office hardware or private network so matter files never leave the firm.

Air-gapped RAG

Retrieval over your own PDFs and precedents with no path to a public cloud model.

Legal document AI (private)

Search, summarise, and draft against client documents that stay inside your perimeter.

Private LLM install

Open-weight models on machines you own, with updates on an encrypted drive.

Full service descriptions →

Confidential conversation

No pitch deck theatre. Tell us about the firm and where data must stay. We reply from the people who install the stack.

Contact JD Fortress AI →