Water was gushing out of Aqualisa Aquarian shower mixer. Insurance guy could not find the isolation valve, so he knock down the wall, cut off the pipes and plugged stop end.
I think that there was no need to do this. He could have simply followed the following procedure:
1. Turn off the main stopcock
2. Expose the pipes by removing Aquarian shower mixer bar assembly.
3. Close the pipes with a stop end.
4. Turn on the mains stopcock.
Installation manual - https://www.plumbworld.co.uk/documents/1-aqualisa-aquarian-thermo-shower-mixer-valve-installation-guide-e9901t.pdf
Could you please help?