Shortly after we moved into our last house I was running a network cable into the den. Up into loft from Box room (where the phone socket and router were installed), across loft, down through build in bedroom cupboard, lift already loose floorboard (bonus), drill hole in ceiling, poke cable through hole.
I then went downstairs to pull it through leaving my son to guide it. No sign of cable or hole!!!!
Decided the chimney breast I'd drilled down next to may be stepped so drilled a hole up from den. Went upstairs looked under lifted plank.
No second hole!!!
WTF!!!
Much poking around through both holes didn't help until I brought a 2 inch hole saw into play, cut 2 inch hole through ceiling from above.
I can now see there is a second ceiling about two inches below the original. Argghhhhh!!!
That house was always very quiet between floors:-)
Happy Christmas to you all.
Mike