The Civil Service Insurance Society (CSIS) is a provider of travel insurance, to current, former and retired civil and public servants and their partners. CSIS have been around for over 100 years, providing products to all those associated with the Civil and Public service. CSIS are highly rated on Trustpilot and are proud to offer a first-class service for sales and customer service. The big difference about taking out an insurance policy with CSIS is that all available profits are donated to civil and public service charities. Find out more.