If you look at the clock tower in photo no 2, you can see some wrought iron railing around the top of the tower. Next time you pass, take a look; you can will a small steel shed inside the railing put there during WW2, and used for fire watching. The entrance to this shed in thought a trap door in the floor.
You may recall that sometime in the 90’s the Council House had some major roof work done to it; a friend of mine was the project manager. When he saw this iron shed, it was rusting away and falling apart, so he finished the job off and threw it all in the skip.
Within half an hour the conservation officer arrived on site, and told him it had to be put back. Even allowing for the fact it was not part of the original building, it was there when the building was listed. He had great fun getting it all welded back together, lol.