to remove the tiles around the shower to repair the shower and replace with new tiles? as we can now purchase replacement tiles. we appreciate it's going to cost some but it's probably going to be a whole load cheaper than a new bathroom.
when is the shower leaking? all the time or only when you use it?
as mentioned above, the shower connection does appear to be leaking, this could be a simple o ring and could also be allowing water to track down the pipe in the wall and come through the ceiling. this would happen all the time though, not just during use.
if it's only happening during use then 