This would be a typical EDC for the city. If Im travelling on the Underground this would be supplemented with a good first aid kit made up from St John Ambulance supplies, 500ml water bottle and a larger LED torch with long-life batteries (around 100 hours) and spares, and a mobile phone.
EDIT: Oh, and I forgot to mention a whistle.
Of course, different environments require different stuff...which just adds to the fun
Sorry about the low quality image, its taken with a mobile phone (Siemens M65 nice robust construction with a reinforcing, external metal frame, but the pixel size leaves a little to be desired).
Incidentally, the BCUK key ring LED is a little beauty, it still works even having accidentally gone in the washing machine.
Best regards,
Paul.