It's not just giant sink holes

From The Evening Standard:

A series of pavement explosions has injured at least seven pedestrians in London in recent months, the Standard can reveal today.

One pensioner is now suing a power supply company after he was left seriously injured by an explosion under a manhole in a London street. Details of his case have emerged just weeks after a woman pedestrian suffered 20 per cent burns in a similar freak explosion in Edgware Road....

Etc etc, worth a read in full.