Councils in the West Midlands have been urged to increase their stake in Birmingham International Airport. Seven councils have a combined 49% shareholding in the airport, but they could increase their control after infrastructure group Macquarie announced it wants to sell its 24% stake. The chief executive of the Birmingham Chamber of Commerce, Jerry Blackett, has urged the councils to bring the airport back into public hands. Council chiefs met yesterday – after The MJ went to press – to discuss the matter.