It was like a nightmare. Late at night last Wednesday I crossed the Thames in east London by walking through the Rotherhithe Tunnel, nearly a mile underground on a narrow pavement in a tunnel with two sharp bends, continuous motor traffic and precious little ventilation.
This was not an intentional act of masochism. I try to walk 5km a day, so leaving a friend’s flat in Deptford, near Greenwich on the south bank of the river, I determined to return to my flat in Limehouse on foot — and see something of a little-visited stretch of the south bank (over the water from the gleaming towers of Canary Wharf) on the way. It was about 10.30pm.
Once opposite my flat there were only two ways
