Heat Meter Location

Thanks!
Yes - I plan to remove it so I can put it somewhere more visible (and not pointing backwards!) I just need to ask the plumber to move a fitting tomorrow so I can slide it off (currently it fouls another pipe before it disengages)

I haven’t found the spare mount - but I’ll look again, and I’m sure I can work something out either way

Correct - the unit is before the motorized valve, see below