Henry R. Drayton
Hardware & Integration Engineer
U.S. / AUS Dual Citizen
Imperial College London (MSc)
The Royal College of Art (MA)
Innovation Design Engineering 2026
Lexi
Imperial College London
London
2025
2025
Lexi is a communication support app for adults living with aphasia, most commonly caused by stroke. One in three stroke survivors develops aphasia, they know exactly what they want to say, but speaking, writing, or texting becomes incredibly difficult. Many withdraw from conversation altogether, not because they have nothing to say, but because existing tools make interaction slow, effortful, or clinical.
Lexi takes a different approach. It listens to the conversation partner and surfaces a small set of contextual replies in real time, supporting more fluid, everyday exchanges. Early testing shows communication speed improvements from around 10 words per minute to 75.
Built with React, TypeScript, Python, and OpenAI, deployed on Vercel with a Tailwind interface.
The project has been shaped through ongoing co-design with people living with aphasia, stroke survivors, and speech and language therapists. Lexi was selected for the WE Innovate 2026 cohort at the Imperial Enterprise Lab and the Hult Prize 2026 Accelerator, chosen from over 18,000 entries.
Co-founded with Nefeli Vitoraki and Ioannis Papidakis.
Lexi takes a different approach. It listens to the conversation partner and surfaces a small set of contextual replies in real time, supporting more fluid, everyday exchanges. Early testing shows communication speed improvements from around 10 words per minute to 75.
Built with React, TypeScript, Python, and OpenAI, deployed on Vercel with a Tailwind interface.
The project has been shaped through ongoing co-design with people living with aphasia, stroke survivors, and speech and language therapists. Lexi was selected for the WE Innovate 2026 cohort at the Imperial Enterprise Lab and the Hult Prize 2026 Accelerator, chosen from over 18,000 entries.
Co-founded with Nefeli Vitoraki and Ioannis Papidakis.