DYAD, an AI healthcare startup, has raised £7.5 million in a Series A round led by Sangha Capital, with participation from Bill Tai and Carbide Ventures. The round closed in April 2026 and brings total funding to £15 million.
DYAD targets long, unstructured healthcare documents that take human effort both to write and to decode. Its proprietary AI system, GENIE, converts information in these documents into structured data that can go into patient records, and into tasks for agentic systems to action. In primary care, GENIE powers BetterLetter, a clinical coding platform used by more than 200 GP surgeries. BetterLetter addresses the £300m annual burden of unstructured data transfer between secondary care and primary care. A member of the practice team reviews and approves every suggestion before it reaches the patient record. DYAD also keeps its own clinical coding team, so the product learns from real interactions within real-world workflows.
Rather than relying mainly on large language models, GENIE uses a multi-stage approach known as Graph Enabled Information Extraction. NLP identifies medical entities and matches them to the right clinical coding taxonomy, while knowledge graphs apply defined clinical rules and logic. LLMs come in only at the final stage, to resolve semantic ambiguity. The approach is designed to help practice teams code and action clinical correspondence more efficiently while improving the quality and depth of coding.
Founded six years ago by Dr Alexander Tayler and Dr Steven Hamblin, DYAD now supports the processing of approximately 500,000 clinical letters each month. BetterLetter has processed more than five million clinical documents to date.
The new funding will speed up the rollout of BetterLetter across UK general practice. Alongside that, DYAD plans to pilot GENIE in secondary care and mental health services, where progress notes, referrals and care planning create similar clinical inefficiencies. These pilots will run in the UK and more broadly across the Middle East and United States. Primary care is the starting point for a wider ambition to improve the handover of clinical information between healthcare organisations and make patient data more usable across the whole healthcare system.
Some of the most important patient information is still trapped in documents that existing systems cannot properly integrate, creating an unnecessary administrative burden for healthcare teams. More than 200 GP surgeries are now using our technology, benefitting from a purpose built world model for clinical coding and agentic platform for healthcare administration. This investment will allow us to accelerate that growth and take our technology into other parts of healthcare.
DYAD is tackling a fundamental problem facing healthcare systems, vast amounts of valuable clinical information remain locked inside unstructured documents. The company has demonstrated both the strength of its technology and clear demand within primary care. We see a significant opportunity to build on that foundation and apply DYAD's technology across the wider healthcare system.
