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Sioma

London, United Kingdom (UK) · Finance and Banking

Source

Verified by Enterprise League

Data quality

Complete · Accuracy

Last verified

May 2026

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Overview

Sioma is a boutique insurance advisory firm based in London, specialising in providing expert technical insurance advice to protect businesses and high-net-worth individuals. Founded by Chartered Insurance Broker Alexander Margolin, Sioma combines a deep understanding of risk management with a commitment to exceptional client service. We cater to a diverse range of sectors, including property development, electric vehicle manufacturing, construction, and luxury assets, offering tailored solutions for complex and high-value risks. With over £4 billion in real estate insured in the UK and a track record of insuring the highest value body parts, vehicles, and antiques, Sioma delivers unparalleled protection. Our team of experienced professionals, including Chartered Insurance Brokers and Account Managers, leverages decades of industry expertise to ensure our clients are fully supported. We pride ourselves on a focused approach, serving a select number of clients to guarantee a premium service experience. Sioma’s dedication to quality and technical knowledge makes us a trusted partner for businesses and individuals seeking comprehensive insurance solutions.

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Contact Details

+440204 586 1202
ivan@sioma.co.uk

London, United Kingdom (UK), 38-39 South Molton Street

Founded

2018

Company Type

Private Limited Company

Employees

10-20

Keywords

#property insurance

#liability insurance

#cyber insurance

#motor insurance

#professional indemnity insurance

#management liability

#engineering insurance

#landlord insurance

#risk management

#property owners

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