Once again thanks for your post.
Finding a good tiler, builder, plasterer or even a forum is like having a go on the lottery other than the odds might differ, there is a site called Place4Trades, find a tradesman, tiler, tilers, plumber, plumbers, in the UK that I know have some good professionals and if you are a true professional you can advertise there, but if they get bad comments about you or your business you will be removed.

Hope this helps you in your hunt for a tradesperson.