I should have added in my original post, that the leak has been stopped. Made the correction. The plumber I called in urgently did exactly as you said, thank you.
Help please!!
Found a leak in the shower valve water supply pipe joint (cpvc to copper), leaking behind the shower panel into the interior of wall of bath.
Please see video of leak here:
https://drive.google.com/open?id=1RtvFQoFV0uG6X5tSGsVSaXjCxsGcshRi
The leak has been stopped.
Could not...