OpenEvidence has become the reference point for clinical AI search. Reuters reported a $12 billion valuation, daily use by more than 40% of US physicians across 10,000 hospitals, and approximately 18 million verified-physician clinical consultations in December 2025. For US doctors, it is the closest thing to a default clinical search tool — free, fast, cited, and increasingly embedded in EHR workflows including Mount Sinai's Epic deployment.
For UK clinicians, the situation is different. Telecare Aware reported in April 2026 that OpenEvidence access has been terminated in the UK and EU, citing regulatory uncertainty around the treatment of AI systems. Whether the withdrawal is temporary or structural, the practical question is the same: what should UK doctors use instead?
Why the UK Market Is Different
The UK does not need a clone of OpenEvidence. It needs clinical AI search built around UK practice. OpenEvidence is trained on peer-reviewed medical literature — predominantly US-centric journals, US drug names, and US clinical frameworks. A UK GP asking about hypertension management needs an answer grounded in NICE NG136, not ACC/AHA. A UK pharmacist checking an interaction needs BNF or SmPC data, not US formulary information. A UK trainee preparing for MRCP needs questions mapped to the UK curriculum, not USMLE content.
The gap is not "we need OpenEvidence but in the UK." The gap is "we need clinical AI search that understands UK clinical practice."
The Emerging UK Alternatives
iatroX — Clinical Search, Calculators, and Exam Preparation in One Platform
iatroX is a UK-focused clinician platform that combines clinical search, calculators, exam preparation, and education. Ask iatroX provides cited clinical answers oriented around UK practice — short responses with source links that clinicians can verify. The platform also includes 80+ clinical calculators with editorial content and guideline references, and 15+ adaptive exam Q-banks covering PLAB, UKMLA, MRCP, MRCGP AKT, MRCEM, PSA, MSRA (free), and specialist diplomas (£99/year). UKCA-marked, MHRA-registered Class I medical device.
If the need is broader than one-off evidence search — clinical questions, calculators, exam revision, and ongoing learning — iatroX is built around that wider clinician workflow.
Praxis Medicine — New Entrant with UK-Focused Positioning
Praxis Medicine is an emerging clinical AI search product. Founded by Douglas Stark (previously a co-founder of Voi), backed by Balderton Capital and Creandum, with Breakit reporting 70 million SEK raised in April 2026. Praxis has publicly positioned itself as building a UK-only clinical decision-support product for UK-licensed healthcare professionals. Its landing page lists UK trusted sources including NICE Guidelines, NICE CKS, NHS Digital, and Europe PMC.
Praxis has also described seeking NHS Website Content API access as a first step toward broader NHS integrations, as documented in the NHS England Developer Community. Early stage, but the founder signal, VC signal, and explicit UK-source positioning make it a company to watch.
Medwise — NHS Enterprise Guideline Search
Medwise AI focuses on enterprise deployment for NHS organisations, integrating local Trust policies and formularies alongside national guidelines. The Health Research Authority has listed a prospective pilot comparing Medwise's AI search engine against manual hospital intranet guideline search — the first study of its kind in the UK. Medwise's website references use across thousands of clinicians in NHS organisations. Enterprise licensing — not currently available to individual clinicians.
Umbil — Ward-Focused Clinical Workflow Assistant
Umbil is a UK clinical workflow tool that retrieves answers sourced strictly from NICE, CKS, SIGN, and BNF. Beyond question-answering, it generates referral letters, discharge summaries, SBAR handovers, and patient consent explanations from clinical notes. Purpose-built for daily ward tasks — a workflow tool with guideline search attached, rather than a pure search product. Free tier available.
ChatGPT and General AI Tools — With Caveats
Standard ChatGPT, Claude, and Gemini can answer medical questions. They are powerful for evidence synthesis, writing, and administrative tasks. But they are not optimised for UK-specific clinical queries, they do not preferentially cite UK guidelines, and they carry hallucination risk on clinical content. For clinical decision support where UK guideline accuracy matters, purpose-built tools are more appropriate. For administrative tasks and broad research, general AI tools remain useful.
Which Tool Should UK Doctors Use?
The answer depends on the workflow.
For daily clinical questions grounded in UK practice — the "what does NICE say?" queries that arise dozens of times per week — a UK-focused clinical search tool provides more relevant answers than a US-centric platform or a general-purpose chatbot.
For exam preparation alongside clinical reference — the trainee who needs MRCP revision and clinical guideline access in the same platform — iatroX is the only tool combining both.
For clinical scoring and calculations — NEWS2, QRISK3, Glasgow-Blatchford, CHA₂DS₂-VASc — iatroX's calculators provide validated scoring with editorial context and guideline references.
For enterprise deployment with local Trust policy integration — Medwise addresses institutional needs that individual-clinician tools do not.
For broad evidence synthesis and literature review — ChatGPT and similar tools remain strong, with the caveat that outputs should be verified against UK authoritative sources.
Compare tools by UK relevance, citation visibility, speed, practical workflow integration, educational value, clinical calculators, and mobile access. The best tool is the one that fits your actual clinical day.
Try iatroX for UK-focused clinical questions, calculators, and exam preparation →