 In 1907 Simms established the Simms Magneto Company Ltd to manufacture magnetos under licence from Robert Bosch but he was unable to compete with European prices and it closed in 1913.He had however contributed to Bosch's business by his stimulus to their further product development and in opening up the French market for Bosch.In 1913 Simms started Simms Motor Units Ltd, at first to sell and repair components, in particular dynamos and magnetos.