First place that jumps to mind is Richmond! Radio 4 is certainly more "chatty" while still being posh and Richmond is both posh and full of that street/café life.
If we're going to fill out the roster, let's say Radio 1 is Camden, 1xtra is Brixton, Radio 2 is Bromley, Radio 5 is Dagenham, and 6music is eh.. I dunno, Shoreditch?
If we're going to fill out the roster, let's say Radio 1 is Camden, 1xtra is Brixton, Radio 2 is Bromley, Radio 5 is Dagenham, and 6music is eh.. I dunno, Shoreditch?