Manganese Bronze Holdings the early 1960s Manganese Bronze Bearings Ltd (as it was then known) was taken over by a Dennis Poore investment vehicle, Villiers Engineering Ltd, a motorcycle company chiefly known for its range of engines, creating Manganese Bronze Holdings Ltd. This company subsequently bought Associated Motor Cycles Ltd, owners of the Norton AJS and Matchless motorcycle brands in 1964. Manganese absorbed part of the Birmingham Small Arms Company in 1973 - which included Carbodies, the Coventry-based London taxicab maker, under chairman Dennis Poore, as part of a rescue plan initiated by the British government. BSA Motorcycles interests trading as Triumph were
TX4 is developed to rectify the fault, the financial position of the group remains unclear and trading in the company's shares will remain suspended." The company had not reported any profits since 2008. On 30 October 2012 Manganese Bronze Holdings went into administration, and on 31 October 2012 PricewaterhouseCoopers, the administrators, shed 156 jobs at the Coventry head office and production line, and other jobs at various dealer outlets around the country including London. Production at the Coventry site resumed in September 2013, ownership of the assets formerly owned by Manganese Bronze Holdings having now passed to a new company, The