Thanks again, took a long time - took about week just to tile - and I only charged about a day and a half rate (thats how long I thought it might take) so didn't make very much out of it. He spent over £1000 on tiles.
Just lots of obstacles including really wavy plastering under the sink and was mixing adhesive by hand to begin with.
And it has to mixed about as thick as humanly possible to stop it sliding.
Perhaps I could have saved time by tiling with whole strips straight up from the bath (rather than having al these cut tiles) - could have saved some time. Literally hundreds of small tiles to feed throught the wet saw. Hard work, I can see why people turn this stuff down.