Why is Downing Street Painted Black?

'Jonnie made me see London through a whole new set of eyes, the beauty in every corner of it. He is full of intrigue, facts and fun, and has been a huge part of my love for the place I now call home.' James Corden

Jonnie 'is a conduit for the city's soul, distilling its chaotic history into digestible, engaging narratives' The Times