Printed circuit boards, pcb manufacturers, metal backed, metal core, led pcbs, plated through copper, 12oz copper, 6oz internal copper finish Printed circuit boards, PCB's, Printed Circuit Board design, pcb manufacturer, metal core, metal backed, led pcbs, burr removal, plated through copper core, multi layer, ims, 12oz copper finish, high copper weight, Leicester Circuits (UK) LLP design and manufacture printed circuit boards and specialise in IMS products and the latest heat dissipation techniques and technology.