When GPnotebook, the most established reference brand in UK general practice, ships a natural-language AI feature, the argument is settled: conversational clinical search is now a mainstream primary care category, not an early-adopter experiment. The question for a UK GP in mid-2026 is no longer whether to use such a tool but which one fits which job. This guide compares ten, assessed in July 2026.
How we compared them
We scored each tool against the dimensions that matter in UK practice: UK-guideline specificity; curated versus broad literature sourcing; whether citations link directly to original sources; primary-care orientation; adjacent tools such as clinical calculators; drug information handling; CPD integration; patient-data posture (none of these tools should receive identifiable patient information unless its terms explicitly permit it); and free versus paid access. Availability to UK users was treated as a threshold criterion, because a tool you cannot open is not a tool. Assessments reflect publicly available information as of July 2026 and no platform paid for inclusion.
1. iatroX
iatroX is a UK clinical AI platform built around retrieval from national guidance and medicines information: NICE, CKS, SmPC/eMC, MHRA, SIGN and NHS content, with citations pointing at those sources directly. Around the answer engine sit 80+ UK clinical calculators, reflective CPD logging, a Socratic learning mode and Q-banks across UK postgraduate exams, so clinical questions, scores and learning live in one workflow. The clinical decision-support tool is UKCA-marked and MHRA-registered as a Class I device. Ask iatroX, the calculators and CPD are free; specialist and international Q-banks are paid. Best for UK-source-grounded conversational answers with calculators, learning and CPD attached; as the publisher of this guide we declare the obvious interest and encourage you to test it against the others.
2. GPnotebook AI Answers
The newest entrant and the most familiar brand. Structured answers generated primarily from GPnotebook's 35,000+ GP-authored articles, supplemented where needed by authoritative sources such as NICE, with links back to the supporting pages and automatic CPD capture for Pro subscribers (0.05 credits per answer read). Free accounts get 10 answers a month; Pro (£7.99 a month or £71.88 a year) gets 1,000. Best for clinicians who already trust GPnotebook's concise archive and want faster access to it with CPD built in. Its provenance runs to GPnotebook's own summaries first rather than to national guidance directly, and no independent performance benchmark has been published yet. Our full review covers it in depth.
3. Heidi Evidence
From the company behind the most widely adopted AI scribe in UK general practice, Heidi Evidence returns citation-backed clinical answers grounded in named source partners including NICE, BMJ Group and MIMS, free at the individual tier and ad-free. The significant UK caveat: under current compliance settings, Evidence is not available during a live session for UK and EU users, so the between-patients use case is supported while the mid-consultation one is not. Best for clinicians already inside the Heidi ecosystem who want cited evidence checks adjacent to their scribing workflow.
4. BMJ Best Practice
A structured, rigorously edited evidence-summary product with strong topic pages, algorithms and comorbidity handling, widely available to NHS staff through institutional access. Its interface is evolving in an AI-enabled direction, and BMJ Group content increasingly also reaches clinicians through third-party AI tools. Best as the curated evidence layer many UK clinicians already have institutional rights to, particularly for structured differential and management overviews.
5. AMBOSS AI Mode Clinical Care
AMBOSS placed an AI search agent over its curated knowledge base, selected guidelines and a drug database in late 2025, and it ranked first among 31 systems in the independent Stanford-Harvard NOHARM benchmark for clinical care safety, one of the few published external evaluations in this category. The orientation of its guideline layer is US-centred, so UK users should verify jurisdiction on anything threshold-dependent. Best for hospital doctors and internationally minded clinicians who value a benchmarked, curated system and can supply the UK verification step themselves.
6. OpenEvidence
The dominant US clinical AI search engine, grounded in peer-reviewed literature with major publisher partnerships, but it withdrew from the UK and EU in April 2026 citing regulatory uncertainty and remains unavailable to UK clinicians as of July 2026. It stays on this list because UK GPs keep asking about it; the practical answer is that you cannot currently use it, and our analysis of the withdrawal and its alternatives covers the gap it left.
7. UpToDate Expert AI
Wolters Kluwer's generative layer over UpToDate's physician-authored content, expanded with its Lexidrug drug reference and, since March 2026, able to award CME credit within the workflow. It is enterprise-oriented, US-centred in guideline orientation, and paid. Best for hospital and specialty settings where UpToDate is already licensed; UK primary care users should treat its recommendations as requiring UK guideline verification.
8. Vera Health
A literature-grounded clinical answer engine that positions itself on free access for verified clinicians, graded evidence citations, multilingual support and global availability, and which has been actively courting displaced OpenEvidence users in Europe. Best for research-flavoured questions where you want graded literature synthesis; UK-specific pathway questions still need a UK-guideline layer on top.
9. Medwise
A UK-founded clinical question-answering tool that retrieves from trusted sources with a UK orientation, used in some NHS settings. Coverage and product momentum have been more modest than the larger entrants, so evaluate current functionality directly against your use case before committing workflow to it.
10. DynaMedex
EBSCO's combination of DynaMed evidence summaries and Micromedex drug reference, with a conversational Dyna AI layer, typically accessed institutionally. Best where an organisation already licenses it and wants evidence summaries plus deep drug information in one paid package; UK primary care specificity is limited.
Side-by-side
| Tool | Source model | UK-guideline focus | Direct source links | Free tier | CPD/CME capture |
|---|---|---|---|---|---|
| iatroX | UK national guidance retrieval | High | Yes | Yes | Yes (reflective) |
| GPnotebook AI Answers | Internal curated archive plus NICE supplement | High (via summaries) | To GPnotebook pages | 10/month | Yes (automatic, Pro) |
| Heidi Evidence | Named partner sources | Medium-high | Yes | Yes | No |
| BMJ Best Practice | Curated evidence summaries | Medium | Within product | Institutional | Yes |
| AMBOSS AI Mode | Curated base plus US guidelines | Low | Yes | Trial/paid | No |
| OpenEvidence | Broad literature | Low | Yes | Unavailable in UK | No |
| UpToDate Expert AI | Curated publisher content | Low | Within product | Paid | Yes (CME) |
| Vera Health | Broad literature, graded | Low | Yes | Yes | No |
| Medwise | Trusted-source retrieval | Medium | Yes | Varies | No |
| DynaMedex | Curated summaries plus drug data | Low-medium | Within product | Institutional | Varies |
The safety line that applies to all ten
No tool on this list is safe for autonomous clinical decision-making, and none claims to be. Each is an information-support layer whose output requires clinician verification, particularly for dosing, referral thresholds, pregnancy, paediatrics and multimorbidity. The differences between them are differences in how much verification work they leave you and how close their citations sit to the canonical source, not differences in whether verification is needed.
For UK GPs the pragmatic stack in mid-2026 is a UK-grounded answer engine for daily questions, your institutional evidence summary for structured reading, and the canonical guidance itself for high-stakes thresholds. iatroX was built to be the first of those three.