AECOM is a global design firm of architects, interior designers, landscape architects, master planners, engineers, consultants, and programme and construction managers, which has delivered some of the world's most complex projects.

The firm's design projects cover major sporting venues, such as the London 2012 Olympic Park and Legacy Framework, the new plan for the LA2028 Olympics, World Expos, new cities, cultural districts and eco-resorts, airports and transportation hubs. The firm is also behind the design of many Fortune 500 companies' headquarters and workplaces and involves in tall building designs and sustainable city and infrastructure development projects.

Globally, AECOM has more than 50,000 employees, including 500-plus architects, working in 100-plus studios across 49-plus countries.

The firm secured the 16th position among AJ100 top 20, based on fees generated in the UK. With a workforce exceeding 400 architectural staff in the UK, they achieved a revenue of $13.1 billion in the fiscal year 2022.

Year founded: 1990 creation of AECOM, went public at NYSE in 2007
Founded by: AECOM (architecture, engineering, construction, operations and management)