Cummins designs, manufactures, distributes and services diesel and natural gas engines and related technologies, including fuel systems, electronic controls, air handling, filtration, emissions solutions and electrical power generation systems. Headquartered in Columbus, Indiana (USA), Cummins currently employs approximately 55,000 people worldwide, and serves customers in approximately 190 countries and territories through a network of approximately 600 company-owned and independent distributor locations and more than 7,200 dealer locations. Cummins earned $1.4 billion on sales of $19.1 billion in 2015.

Cummins has been in the UK for over 60 years, and employs over 5,000 people, manufacturing diesel engines, exhaust after treatment, turbochargers and power generation equipment. Key locations are Darlington, Daventry, Huddersfield and Stamford. In the top 40 list of all UK exporters, the company exports represent 70% of its sales value. More than 45,000 engines were made in 2015 for use in low emission truck, bus, construction, marine, mining, rail, power generation and military applications.