Nuclear Risk Insurers (NRI) is a FCA regulated insurance intermediary that acts as the UK insurance market's underwriting agent for all matters of nuclear insurance. It operates as a limited company and has a membership consisting of over 30 leading UK market property & casualty insurers from both Lloyd's and the general market, who pool their insurance capacity for nuclear risks into NRI; it is therefore commonly known as the British nuclear insurance pool. NRI then uses this capacity both to insure the nuclear sites in the UK and reciprocally to reinsure other nuclear sites around the world in association with similar entities internationally.