Willow, sometimes, just sometimes, the Universe helps sort things out!
After being the kitchen fugitive again all morning, then lunch with school friends, calling in briefly to hear plumber moaning that 'it doesn't fit'
with his head under the sink, then chilling out (ish) at physio, I arrived home to find I have a working sink, heating properly sorted out, mixer tap with boiling water thingy too - so it did fit after all. 
After tomorrow I can put things in cupboards and drawers. Tiler supposed to be coming Monday.
Ladies, the kitchen saga is drawing to a close. Rewiring is another joy to endure.
Physio says my shoulders are holding too much tension and kindly cracked my back into place, so I floated out - I've to get more sleep.
Hope you've all had a good day, eggs on toast all round perhaps courtesy of squirrels kind hens?