Found this archive of the BBC's Reith Lectures whilst looking for the one Richard Rogers gave in 1995. Unfortunately that one isn't online, but I'll be having a listen to some of the others over the next few days.
Been looking for more info on Richard Rogers since watching the Imagine programme about him - this is the report generated by the Urban Task Force that includes him as a member. It discusses ways for cities to evolve and be revitalised.