Roger Madelin, Head of Canada Water for British Land and maverick of place takes us on a whirlwind tour of his new major project in this double episode. We travel up a tower and across the site, followed by Madelin's stream-of-consciousness rap in a noisy cafe where he talks risk, planning policy, the art of stuff, the future of Southwark, Section 106, the axing of SureStart and why we should walk like Italians do