Property veteran Roger Madelin CBE told Insider’s Midlands Property Lunch that Birmingham, Manchester and Leeds need to quadruple in size to become global cities. The director of property giant British Land was speaking at the event at Millennium Point, Birmingham on Tuesday (21 January) “There should be a clear plan to double the size of the Birmingham metropolitan area, as well as the same for Manchester and Leeds,” said Madelin. “In fact they should all probably quadruple looking at international examples.” He said while the size of second, third and fourth cities around the world were a lot closer to their country’s capital city, there was a huge gap between London and other leading UK cities. Birmingham covers 103.4 square miles, Manchester covers 45 and Leeds 213. This compares to London’s 607 square miles.