I am about to start a ceramic tile flooring job in my bathroom and I have
8mm radiator pipes coming up through the floor. What is the best way to deal
with these to get the best result? Is it feasible to actually drill a 12mm
diameter hole through the tiles and then drop them onto the floor to create
the best finish or will I have to cut the tiles and fit them to the pipe?
(The distance from the pipe to the wall is about 3").

The same is required of the walls. I have fitted a new shower mixer and want
the best results around pipe work. The tiles are a small mosaic look on
large tiles