Manganese Bronze Holdings PLC is an engineering company based in Coventry, England. Once an important conglomerate of British motorcycle marques, since the sale of its components division in 2003 the company has only one operating division—LTI Limited, trading as The London Taxi Company—which manufactures and retails London Black Taxis. The London Taxi Company manufactures London Black Taxis and retails and provides maintenance services for taxis in the major cities of the United Kingdom.