ISG
ConstructionEngland, United Kingdom1001-5000 Employees
ISG is a construction services company based in London, United Kingdom, with a headquarters at 33 Aldgate High Street, London EC3N 1AG. The business operates in the construction industry and reports a global workforce of 2,800 specialists, with a stated employee range of 1,001 to 5,000. ISG focuses on delivering spaces and places that support the daily operations of people and businesses, combining established delivery methods with an agile, fast-paced culture. The company has grown through acquisitions, including the 2007 purchase of Kent-based Cathedral Contracts Ltd for £11.8 million, expanding its retail fit-out capabilities. In 2024, ISG was awarded the Best of BREEAM 2024 Award for Refurbishment & Fit Out for the Northcliffe House refurbishment.