The Mayflower Corporation plc is an engineering group based in the United Kingdom. The Company is comprised of four operating companies: TransBus International, Mayflower Vehicle Systems, Mayflower e3 Engines and Mayflower e3 Energy. TransBus International designs, engineers and manufactures chassis, bodies and complete vehicles. It manufactures lightweight, low-floor, easy-access buses, and owns three major brands: Alexander, Dennis and Plaxton, as well as the United Kingdom-based Kirkby Coach dealership. Mayflower Vehicle Systems designs, engineers and manufactures large-scale automotive stampings and assemblies to the body in white stage. Mayflower e3 Engines focuses on the development of an environmental and fuel-efficient internal combustion engine. Mayflower e3 Energy focuses on the design, manufacture and operation of the Mayflower Resolution, an offshore windfarm installation vessel.