Contributor(s): Lord Wolfson, Professor Paul Cheshire, Dame Kate Barker, Stephen Aldridge | It is 40 years since Paul Cheshire began to investigate the economic effects of our land use planning system and 20 years since Kate Barker published her first review of the impact of planning on housing supply. Their insights have helped us understand what can be done to ensure decent housing for all and boost productivity – but, after three failed attempts at significant planning reform - we are now in a time of economic stagnation and facing a housing affordability crisis that is only becoming more desperate as interest rates rise.