AI that supports better behaviour and decision making.


We help digital health teams design, evaluate, and deliver AI systems that improve patient experience, strengthen workflows, and perform in real world settings.


Book a Discovery Call
22
Countries with patient-facing AI
95%
Weight loss sustained at 12 months
1m+
Patients on programmes we designed
27
Peer-reviewed publications
130k+
Families — CDC-recommended MEND programme
Book a discovery call →
Selected clients and partners
Numan
Allurion
Holly Health
HeliosX
MedExpress
WW International
Slimming World
MEND
Lumen
Stride
Reset Health
Imperial Health Impact Lab
Behavioural AI Institute
Numan
Allurion
Holly Health
HeliosX
MedExpress
WW International
Slimming World
MEND
Lumen
Stride
Reset Health
Imperial Health Impact Lab
Behavioural AI Institute
Client feedback
What our clients say

Paul brings deep domain expertise, a highly collaborative spirit, and a bias for action. His impact at Numan has been profound — and lasting.

Jamie Smith Webb
CTO, Numan

Sacher AI quickly felt like an extension of our team. User safety was prioritised and the operational tests to check the interactions and outcomes were really thorough.

Grace Gimson
Co-founder and CEO, Holly Health

Paul's transformative work in creating our behaviour change programme has had astonishing results. Our patients have been able to sustain 95% of their weight loss even 12 months after the programme's end — truly impressive considering the chronic nature of obesity.

Benoit Chardon
Chief Commercial Officer, Allurion Technologies

Recent blog updates


Diverse digital health team reviewing patient engagement data for a weight management platform
By paul sacher March 12, 2026
GLP-1 drugs are transforming obesity treatment, but behavioural science is lagging. Why digital health platforms may hold the key to better long term outcomes.
Diverse digital health team reviewing patient support data and treatment journey analytics in a mode
By paul sacher March 10, 2026
What digital health platforms are learning as GLP 1 services scale. Why behaviour change support and AI systems matter for retention, safety and operational pressure.
March 9, 2026
Reflections from the MHRA AI Airlock simulation workshop

Alata

Alice

Open Sans

Noto Sans

Bebas Neue

Great Vibes

Rock Salt

Exo

Belgrano

Overlock

Cinzel

Indie Flower

Staatliches

Roboto Slab

Lato

Noto Serif

Open Sans

Montserrat

Ubuntu

Rubik

Delius

Amiri

Montserrat