If your last fire extinguisher inspection tag is more than a year old, that's the clearest sign a check is overdue — extinguishers need annual servicing regardless of whether they've been used.
A fire alarm panel showing unexplained fault lights, or one nobody on-site knows how to interpret, is a real compliance risk hiding in plain sight.
Emergency lighting that doesn't illuminate during a manual test, or exit signage that's faded or obstructed, are both common civil defence audit failures that are simple to fix once flagged.