Just one thing that I had pointed out to me many years ago. Rubber grommets in the entry points to the metal backboxes shouldn't be considered optional.
+1 to this, see so many ring main cables where at the absolute least the outer insulation is cut through from being dragged through various backboxes and/or vibration/heat/wear, everything metal should be earthed but a bit of grommet or rub protection here and there works wonders.
As far as I got after work / before little ones bedtime.
Conduit clips were a pita so I’m going to use a bit of gripfill to secure the trunking then plaster.