A few years ago I was at a train station in the UK when they started paging an "Inspector Sands", the fire alarm (I think) was going off on one of the platforms.
A few days later I was taking the Tube when once again I heard "Inspector Sands" being paged to the operations room (the message was obviously a recording and was repeated every 15 seconds) . Then after about five minutes of Sands being paged, the message changed to:
Your attention please. Due to a reported emergency would all passengers leave the station immediately.
The station was then evacuated and closed.
Is "Inspector Sands" some type of code word for a fire alarm or emergency on British trains and the Underground?