You already know the answer as to whether this is acceptable Richard. You are quite right to get the opinions from the guys on here. They will not lie to you, neither will I.
That is truly shocking, When you say a new bathroom, I presume either in new build or an extension. Either way the walls would, and should, have been pretty good order, as in flat ready to tile to, so there are no excuses.
Just to repeat, I hope you haven't parted with any of your hard earned cash. That quality is not worthy of payment in my opinion. It cannot be rectified without removing and starting again. Depending on what adhesive has been used, probably tubbed, then the full tiles may be re-usable.
Was this actually carried out by a tiler or a builder?
That is truly shocking, When you say a new bathroom, I presume either in new build or an extension. Either way the walls would, and should, have been pretty good order, as in flat ready to tile to, so there are no excuses.
Just to repeat, I hope you haven't parted with any of your hard earned cash. That quality is not worthy of payment in my opinion. It cannot be rectified without removing and starting again. Depending on what adhesive has been used, probably tubbed, then the full tiles may be re-usable.
Was this actually carried out by a tiler or a builder?