Advice please on floor and wall tile spacing

Nice. I have another bathroom job coming up soon, I was looking at something like these or the "Perfect Level Master" ones (which seem a fair bit more expensive)

 

Grey, Grey or Grey?

Look at te Ardex range for example - there are about 12 different Grey tones plus White and Black. http://www.ardex.co.uk/products/ardex-flex-fs

They do grout for gaps up to 4mm and another for gaps of 3-15mm ...

 

Very good products Ardex, only tile adhesive I've use is from them.

 

There most certainly is ... My tiling is DIY and I am slow however I cannot fault the Ardex x-7 and X77 (flexible) adhesives. You can mix as much or little as you need, consistency is good and it holds the tiles where you want them, easy to lift a tile, re-comb adhesive and try again. Good long open times, so if you mix reasonable quantities, you don't waste much. Their grouts mix up well even in very small amounts and work well too.

Down side - it is not the cheapest, however by shopping around and I have a couple of good suppliers, prices are not much more than shed own brand.

 

Normally only two I use, Ardex x-7 and X77, hard to find better.

 

or four if you include the -W and -G variants!