I vaguely remember a story about an Acorn Archimedes[1] or it's Unix variant used for some embedded system in the City of London that was caught in an IRA bomb

I vaguely remember a story about an Acorn Archimedes[1] or it's Unix variant used for some embedded system in the City of London that was caught in an IRA bomb blast. Apparently that booted up like a trooper and carried afterwards too. Wish I could find the details.