Heidi's Impact Report draws on independent service evaluations and real‑world usage data from NHS and independent providers.

Dr Thomas Kelly, co-founder and chief executive of Heidi, says: ‘Across different care settings, we see the same pattern. When clinicians have access to a reliable AI partner that fits the way they already work, documentation time falls, backlogs collapse and burnout eases, while patients feel more heard, not less. As the NHS moves to deploy AVT at pace, this report offers a practical blueprint of what good looks like, and how to keep clinicians and patients at the centre.'

Emergency Departments, Same Day Emergency Care (SDEC) and outpatients, sites have typically seen around an 85% reduction in documentation time, with the Dudley Group NHS Foundation Trust's SDEC and outpatients units freeing up 221 hours of clinical capacity. Another SDEC clinic saw a reduction in a backlog of 2,700 clinic letters to fewer than 200 in just four months, representing an estimated £139,000 in savings.

In primary care, Modality Partnership, a GP super partnership, halved its documentation time during consultations, with a further 61% reduction in paperwork completed outside of contracted hours. Documentation-related stress dropped by over half (58%) and work-life balance improved by 45%. Stress reduction was even higher (67%) for North East London ICB. Across localities, primary care patients were comfortable with the use of AI in their consultation, with many reporting an improved rapport with their GP. 

Community, hospice, and independent providers saw similar patterns. One frailty team reported cuts of up to 12 minutes per consultation, contributing to a projected annual saving of £313,484 and a £5.10 return for every £1 spent in one multidisciplinary team. In other independent settings, out‑of‑hours documentation was almost eliminated, falling from an average of 25 minutes to around 25 seconds per day.