- The British steelmaker Dorman Long & Co. Ltd., which supplied the steel for the building's frame.
- The British engineering firm Thomas W. Ward Ltd., which supplied the cranes used to erect the steel frame.
- The British construction company John Mowlem & Co. Ltd., which was responsible for the foundation and concrete work.
- The British architect Shreve, Lamb & Harmon, which designed the building.
In addition, many of the workers who built the Empire State Building were immigrants from the United Kingdom.