I'm planning on adoing some tiling over next weekend and have pick up some
bit from B&Q and I've noticed many tilers used a tile trim on the tile edge
for a clean finish so I thought I'd be a copy cat.

Quick question is do you just use the tile adhesive to stick the trim to the
wall ?

Only thing I noticed b&q didn't have was a corner bit for the top when you
lay the other way. Perhaps mitre it ?