The rain really reveals London in the raw. So where better to take a walk in a downpour than through the glitz and glamour of the London district most associated with ostentatious wealth – Mayfair. We peel off Regent Street down Maddox Street into St George’s, looking down into the valley of the lost River Tyburn. We accidentally stumble upon David Bowie’s old red phone box in Heddon Street where he was photographed for the back cover of the Ziggy Stardust album (I had no idea and learned this in the YouTube comments). We pass through St James’s Church into Jermyn Street and stroll Piccadilly Arcade to face The Royal Academy of Arts on Piccadilly. And its here we find the destination of this sodden walk (via Hatchards booksellers) – Burlington Arcade. Opened in 1819, following the fashion started on the continent in Paris and Brussels, this beautiful passage seems to belong in a parallel dimension. When I emerged at the other end – the rain had stopped.