I used to work in Aldwych and in 2011~ there was a flood in the CAA building (exactly where this fire is) it took the power out for the whole area that was affected by this fire. Under the CAA is a major electrical distribution point for the area, I am not an engineer, but there is every chance that the flood and subsequent corrosion damage could be related, especially if part of the system isolated due to damage was put back into service?
Just a thought...
Biting the hand that feeds IT
