LukeFF thats because they were made by Royal appointment by the company Messrs Heath and Robinson. This was a well established traditional UK company that specialises in precision devices with a particular penchant to make simple tasks more complicated. It is believed that this unique attitude was what the English electrical company LUCAS saw in Messrs Heath and Robinson and so bought them out. This then ensured that Lucas could capture that unique part of the UK Auto Electrics market and provide electrical components that never worked.