Welcome to the King Group of Companies Providing engineering solutions to meet our customers’ needs. King Trailers King is the UK's largest manufacturer of trailers for abnormal loads. King Highway The number one provider of Traffic Management vehicles, equipment and service in the UK. King Rail The King Rail division was established to provide products and services to rail maintenance contractors. Safety Vehicles Traffic Management equipment with a wide range of rental/purchase options available. King AVMS The King Advanced Variable Message System (AVMS) provides unparalleled visibility and clear information to drivers. SkyKing Skyking no longer provide any services. For GSR and other parts please contact King Highway.