Firstly a big hello to all.
The scenario -
1 x Triton Thermostatic power shower in the en-suite
http://www.amazon.co.uk/Triton-Showers-TDPS200T-Thermostatic-Shower/dp/B0070Z7EX4
1 x Shower head in the bath and the basin hot water is very low as the Hot water tank is at the same...