I’m not sure why I was wandering around the South Bank at night, but probably after an opening, perhaps at the Hayward or National Theatre, and of course I had a camera with me.
 
I suspect it was the Leica M2, which is a purely mechanical camera and has no exposure metering. I had an accessory meter for it which slotted in and coupled with the shutter dial, the Leicameter MR, a curious battery-free CDS meter which was generally about as accurate as holding up a wet finger, but failed to give an reading at all in low light, and this, or perhaps a few glasses of white wine, accounts for the considerable underexposure.
 
Although my caption states ‘National Theatre from Waterloo Bridge’, I think this is taken from the walkway beside the bridge at a lower level.