Insurer Aon to move headquarters to London CHICAGO, Jan. 13 (UPI) -- Insurance giant Aon is moving its headquarters to London to get closer to the action, the company said Friday. The insurance firm that operates 500 offices with 61,000 employees worldwide, said London provided better access to emerging markets and to Lloyd's. Aon said the London market was "one of the key international hubs of insurance and risk brokerage." Aon said it was not abandoning Chicago, where it has 6,000 employees. The firm said it would keep its U.S. headquarters in the Windy City and will move an additional 750 jobs into the city's downtown Aon Center. The insurer said it would be adding 1,000 jobs in the United States this year. "The move will not cause job loss in either Chicago or the United States," Aon said. Aon said it will change its jurisdiction of incorporation from Delaware to England.