Babcock International Group PLC is a British engineering company specializing in the construction and decommissions of nuclear power plants and submarines; maintenance support; fleet management for aviation, marine, and land; and provision of technical training and emergency services. The company's operating segments include Marine, Land, Aviation, and Nuclear. It generates maximum revenue from the Nuclear segment which is engaged in providing engineering support to the United Kingdom's nuclear submarine fleet, decommissioning nuclear facilities, supporting nuclear generation, and new build projects. Geographically, it derives a majority of its revenue from the Unitedmore
Rolls-Royce operates three core business segments: civil aerospace, power systems, and defense. The civil aerospace segment builds engines powering wide-body aircraft, regional and business jets, and offers aftermarket services. Twenty years ago, the firm pioneered full-service flight hour contracts with the TotalCare package. Power systems provides power solutions to multiple end markets (defense, agriculture, marine, and power generation) while the defense business provides military, ground vehicle and naval propulsion solutions.