Arup is an internationally renowned engineering consulting company, established in 1946 and headquartered in London, England. Although Arup has a high reputation and influence in the field of global architecture and engineering, it is not one of the top 500 enterprises in the world. The top 500 companies in the world are mainly ranked according to their operating income, while Arup's business nature is mainly consulting, design and engineering services, with relatively low operating income.