I don't know how he got so out of line but that's his bad,tell him to take some of the 100 quid you gave him and fix his screw up,be carefull though if he's a hack he may just walk,that's a terrible job,a proper tiler would never have let a job like that get that far,good luck
i cant see how he has managed to get so far out of line surely after the second tile up you would realise that the tiles dont line up.
Right graig what adhesive did he use? was it in a bag that he mixed with water or was it a pre paste in a tub?
if it was the second one you may be able to salvage a lot of the tiles as they tend to come off easier aslong as you dont leave them too long.
Sorry to say but i doubt if this guy will be back to rectify his mistakes. If i was you i would bite the bullet and have another tiler look over the work and see what can be done.
That's a good thing,just keep bugging him until he corrects it,if he doesn't hurry up let him know you're going to get some people in the trade in for their opinion.If he thinks his name and workmanship is going to take a bashing he may rectify it quicker than he's planning on.Get his local tile distributer to come out and quote how much a refix would cost,once they know his name it won't be long before everyone knows his workmanship isn't up to par.
Sorry to be negative, but as above that work is appalling I served a 5 yr apprenticeship 43yrs ago. My work in the afternoon of my 1st day would have looked like that. If this guy is trading as a pro tiler it is a scandal imo:mad2: