MAP20170033127 Catherine Thomas The Uncertaintiy principle : top 100 UK insurers / Thomas, Catherine Sumario: Hit by a negative discount rate, the top 100 Ul< insurers reported a combined underwriting loss last year. What other challenges has the market faced? En: Post magazine : the insurance world covered since 1840. - London : Incisive Financial Publishing Ltd., 2005-2016. - 02/10/2017 Número 10 - octubre 2017 , p. 58-65 1. Empresas de seguros . 2. Ranking . 3. Reino Unido . I. Title.