Sioma is a Mayfair-based insurance brokerage founded by a team of ex-underwriters. 

We operate as a family office for insurance — a single point of contact for a select group of clients with complex, high-value requirements. Our experienced team works across Real Estate, Construction, Technology, Ultra High Net Worth, Professional Services, and Sport, meeting all manner of bespoke requirements — from covering more than £4 billion in UK real estate, to specialist career-ending injury cover for professional athletes.

We are retained by private banks, family offices and private equity firms to take a holistic view of our clients' wealth, business and personal risk.

Led by Chartered Insurance Broker Alexander Margolin, we offer an end-to-end service — advice, product placement, claims handling and negotiation — backed by direct access to underwriters and a trusted network of approved partners, from surveyors to locksmiths, ensuring every aspect of risk is properly managed.

Sioma is comprised of the following companies — Sioma Limited, Sioma Professionals Limited & Sioma Life Ltd.

Sioma

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Sioma

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