Babcock International Group PLC is a holding company. The Company is an engineering support services company. The Company offers support to the defense, energy, emergency services, transport and education sectors. Its segments include Marine and Technology, Defence and Security, Support Services and International. The Marine and Technology segment delivers support to the United Kingdom Royal Navy's submarines, naval ships and infrastructure. It also offers solutions in engineering, equipment management, consultancy, information and knowledge management in energy and commercial marine markets. The Defence and Security segment offers engineering and training support services. The Support Services segment delivers services to both public and private sector customers across three areas: civil nuclear, asset management and technical training. The International segment is engaged in developing its aviation emergency services business, Mission Critical Services (MCS).