my waste pipe underneath my bath is leaking but the bath itself is completely sealed in with non-removable tiles. what is the best way to repair leak?

Whatever happens you will have to gain access underneath the bath to repair the leak.

To go in from below would be costly. I know they say completely sealed but if you have 1 spare tile a good tiler/ multitrader could remove 1 tile and then create a hole in the panel to check on the leak.

Most bath wast pipes are run above floor.... so taking ceiling down, below bath will not help you at all....

Apart from taking part of the ceiling below the bath down you will have to remove tiles and bath panel. Should have left an access panel.

Hi Remove tiles and panel to ensure leak is fixed properly. This is the only problem with tiled in baths. thanks Concept building services

From below. Basically put a hole/holes in the ceiling below to locate the faulty part. If the leak is bad then your plasterboard will be knacked and need replacing anyway so a hole will be irrelevant. Regards AC Plumbing.

prob be best accessed from below if possible through ceiling.