RiverStone International
InsuranceEngland, United Kingdom201-500 Employees
RiverStone International is a UK-based insurance company that acts as an acquirer and reinsurer of legacy and discontinued insurance business. It operates in the UK and Lloyd’s of London markets, as well as Bermuda, the United States, Europe and Australia. Since 2010 it has transacted a variety of deals, including portfolio transfers and company purchases, and has accumulated liabilities exceeding US$18.0 billion, with around US$5.5 billion of total liabilities. The firm employs 201–500 people and is headquartered at 2 Minster Court, London, EC3R 7BB, United Kingdom; its website is rsml.co.uk. In 2026, the group completed its debut US$150 million Tier 2 bond issuance and announced leadership appointments for its Australian operations, including Mark Fleiser as managing director.