Never work with conferences and wifi
As with most conferences, the wifi at Hack Day London was working when we arrived, and within about an hour, had inexplicably stopped working.
Predictably enough, hilarity ensued:
It’s working now. For the time being. Apparently Cisco engineers were despatched via a suborbship from the West Coast, rappelled down the ceiling and walls of Alexandra Palace and made the white boxes go from blinky red-orange-red to not-blinky green.