Thank you both. I have pulled the shower away from the wall and identified the leak. Its at the hose connection to the shower as pictured below. As you can see, the connection is crumbling, I've had a look at the same connection on the top of the however for the waterfall, and it's the same...
Its one of these - came with the house I am afraid http://www.houzz.com/photos/32868627/Corner-Shower-Room-With-LCD-Display-Massage-Jets-and-LED-Lights-Radio-traditional-shower-stalls-and-kits
Ok thankyou - I think we will need to source a more knowledgeable plumber!
Newbie & beginner here seeking help...
We have a shower that has both waterfall and shower head output, and noticed a leak from behind the unit when using the shower head. A plumber has been and indicated the silicone seal around the shower was leaking, and corrected. We tested 24 hours later...