Digital showers are the future. Easy to use, accurate temperatures, 5 year warranties, suitable for all plumbing systems and available in multiple installation configurations.
And even better they can be retro-fitted into an existing bathroom without the need for removing tiles or retiling. 
No bulky shower valves to knock your elbows on. No valves burried in the walls, which are bound to become a problem further down the line when they get scaled up!!
Maybe you want an overhead deluge shower head as well as a riser rail? or…..you fancy having a pumped system? Maybe you want a warm up function so you don’t have to avoid those first few seconds of freezing water while it warms up? And if you have a teenager who spends hours wallowing in the shower and using all the hot water……then you can set a time limit for how long the shower will be on for!!!
How do they work? Simple….the processor/shower mixer is situated in your airing cupboard or in your loft along with the pipework going to it. In the shower, or even outside the shower area, is a fully programable remote control to operate it. Future proof and easy to access for any future problems you may have and you’ll never have to retile if anything goes wrong.
Mira Platinum is my installation choice for this system, proving to be be the most adaptable for any installation and suitable for ALL plumbing systems.
You could, also, always consider fitting a shower pump to your exisitng system which is another service I offer.