UPDATED 01/13/12 2:01 p.m. CHICAGO (CBS)-- Insurance giant Aon says it is moving its corporate headquarters from Chicago to London. Aon says it will keep its headquarters for the Americas in ...

Aon employs 5,000 people in the UK and plans to lease several floors of the Leadenhall Building development, nicknamed the “Cheesegrater”, currently under construction in the City.

Aon Corp. has agreed to move its London headquarters to British Land Co.’s Leadenhall Building skyscraper, known as the Cheesegrater, the London-based Times reported without citing anyone.

Aon recently completed its search for a new London headquarters signing heads of terms with British Land and Oxford Properties on the Leadenhall Building in the City of London. Formal contracts are ...

In a filing with the U.S. Securities and Exchange Commission, Aon Corporation said its decision to move its Chicago-based headquarters to London is at least partially motivated by taxes. The ...