Strata, common property and a false ceiling

[Macquack]

This might put too much pressure on the walls, but arched support before is straightened and bend the other way will take quite a load.
Idea can be run past engineer to calculate what sort of beam across the room has to be put to hold that weight.

Bottom line with these creative ideas is you would lose to much head height and cost a fortune (not practical).

RazzaDazza, just go ahead and do it. If you start about mid-day (noise is less noticeable) and you are organised, you could probably drill all the holes in less than an hour.