The Greenwich Observatory with its green laser beam can transfigure any night sky. If you decide to cross the Thames via the foot tunnel, make sure you look out for the green ray. You can be on one side of the meridian in a minute, and cross to the other side on the next, without even realising it.

Epping Forest is a 2,400 hectares area of ancient woodland between Epping in the north and Wanstead in the south, straddling the border between Greater London and Essex. I tend to get off at Loughton Tube Station (Central Line), which is about 10–12min walk to the forest.

Sit. Drink coffee. Buy Leica. Leave penniless.

Hidden away in the backstreets of Finsbury Park, I used to share a house opposite this pub, where it assumed the role as our second living room. A real north London gem, I still go there these days for the tree-house-like, leafy terraced beer garden, which is perfect for summer evenings.

It's a members-only library but you might be granted access with a research request. The writer's room is great but there's a few special, hidden corners among the bookshelves to tuck yourself away in.