John Towers, the former Rover chief executive who is plotting to buy the carmaker, wants to take the Cowley plant as well as the Longbridge operation, it has emerged. Mr Towers has told BMW that he wants to keep together the group in full, minus the Land Rover operation, which is going to Ford. Sources close to the bid, which is expected to be launched in the next few days, suggest that he is looking to offer about £800 million, though he still needs to seal some final financial backing.