About Archipelago Health

A Jersey company, built around island health systems.

Archipelago Health was founded in 2026 to bring predictive metabolomic screening to communities where it has not previously been available. We are the distributor for Nightingale Health across the Channel Islands, Gibraltar, the Isle of Man, Bermuda and Cayman, and we deliver the test under our own brand, Longitude.

Island health systems are small, closely connected, and carry a high burden of cardiometabolic disease. That combination means a prevention programme can reach a meaningful share of a population quickly, using the doctors and laboratories already there. We do not build anything parallel. We work through what exists.

What we add is the clinical layer around the test: interpretation guidance signed off by our Chief Clinical Advisor, training for every partner clinician before their first patient, and coordination between the practice, the laboratory and the analysing laboratory.

Senior team

Dr Jeffrey MacLeod

FRCGP (Hon) · MRCGP · MFSEM · BMBS · MA · BA (Hon)

Founder

A general practitioner in Jersey and the founder of Archipelago Health, with seventeen years in healthcare development across Australia, Northern Europe, the United Kingdom, Bermuda and the Caribbean. Formerly Clinical Director of Island Health Services and the Argus Group in Bermuda, Strategic Development Advisor to the Kingdom of Saudi Arabia's Vision 2030 programme with EY, and Local Clinical Director of the British Forces Germany Health Service. Sports medicine physician to the Bermuda national football team and a member of the CONCACAF medical committee. Honorary Fellow of the Royal College of General Practitioners.

Professor Andrew J Krentz

MB ChB · MD · PhD · FRCP · FRCPath · FFPM · FRSM · FRSA

Chief Clinical Advisor

Visiting Professor in the School of Life Course and Population Sciences at King's College London and at the Institute of Cardiovascular and Metabolic Research, University of Reading. Editor-in-Chief of Cardiovascular Endocrinology and Metabolism, Chief Clinical Science Officer at Metadvice, and convenor of the Global Cardiometabolic Alliance. Previously NHS Consultant Physician in Diabetes and Endocrinology in Southampton and Senior Clinical Lecturer at the University of Southampton. Author and editor of six clinical textbooks.

Dr Ayoola Oyinloye

MB BS · MSc · MPH · FFPH

Senior Public Health Advisor

Senior Public Health Adviser and Regional Lead for West Africa at the UK Health Security Agency. Chief Medical Officer of Bermuda from 2020 to 2023 and Chair of its Clinical Senate, then Director of Population Health Innovation and Strategy at the Bermuda Health Council. Chief Medical Officer for the British Indian Ocean Territory Administration at the Foreign, Commonwealth and Development Office. Fellow of the UK Faculty of Public Health.

Contact

Send us a message and we will reply by email.

Or write to enquiries@archipelagohealth.org

Archipelago Health Holdings Limited. Registered in Jersey, company number 166172. Incorporated 30 June 2026.