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 has announced it will move its corporate headquarters to London to gain greater access to emerging markets and take better advantage of strategic proximity to Lloyd’s and the London market.

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 ...

Aon Corp. agreed to become the first tenant in the Cheesegrater, a skyscraper in the City of London financial district that’s due to be completed in 2014.