Perfectionist

Thanks for your comments, Dan. Actually, it's my first post anywhere - so I'm glad it's got such a warm response!

Another advantage of the method I've described above is that you don't need to buff up the tiles the following day - the job is finished as soon as you put your tools down, although if you do find a bit of residue on the tiles you can get it off very easily with a rag dipped in cellulose thinners, provided you do it within 24 hours.

I have tiled about 15 bathrooms, toilets, kitchens etc in about 30 years, so although I have a bit of experience I am far from being a professional. I have always marvelled how tilers can do it so quickly. This is one of the reasons I was so concerned about using BAL grout: if professionals hate it, who am I to think that I could manage it?!