A recent article describes how Hartford Financial Services Group has rounded out its Web services/SOA implementation with a UDDI registry. I've had the opportunity to speak with the Hartford folks on several occasions. They have been fairly well advanced in Web services and implementation of ACORD XML. UDDI is helping Hartford's system architects quickly identify and reuse Web services components that are available for deployment.
When I spoke with Hartford last spring, they were engaged in an effort to reuse the same technology used for external interfaces to agents to achieve internal data integration, particularly in processing property, auto and workers' compensation data. My article on the insurance industry's approach to Web services can be found here.