So, I asked him to redo all of the push fittings into copper.
He agreed.
I saw the ones in the floor and although not tidiest I've seen, they are not leaking.
He had already put plasterboard on the shower fittings and said he did them in the morning. In the evening just before he was about to leave he started applying bonding.
I was a bit suspicious as I didn't see any of the push fit lying on the floor as you might expect and I noticed some insulation between floor and wall in a gap.
I asked several times is it done and was assured.
So I took a risk and said I'm going to check and proceeded to take the screws out of the plasterboard which also took some of the bonding off.
I was right, he hadn't changed them. My next words:
!#*!!!!!#*!@!#!£!#!#!##!£!#
He'll come back today to redo them.