A couple of decent threads you can bookmark and refer to.
Poor workmanship by DIY or Rogue Traders: http://www.tilersforums.com/tiling-forum/63897-public-thread-poor-tiling-workmanship-diy.html
Professional Tilers Work (Thread):http://www.tilersforums.com/tiling-forum/37000-tilersforums.com-show-us-your.html
Forum: Wall and Floor Tilers Work | Tilers Forums
Oli's Questions and Answers: http://www.tilersforums.com/tiling-forum/13313-all-questions-i-asked-when-i.html
Poor workmanship by DIY or Rogue Traders: http://www.tilersforums.com/tiling-forum/63897-public-thread-poor-tiling-workmanship-diy.html
Professional Tilers Work (Thread):http://www.tilersforums.com/tiling-forum/37000-tilersforums.com-show-us-your.html
Forum: Wall and Floor Tilers Work | Tilers Forums
Oli's Questions and Answers: http://www.tilersforums.com/tiling-forum/13313-all-questions-i-asked-when-i.html