Wow!
Thank you so much guys for your knowledge which is much appreciated.....
I will give this some thought and try and find the best possible outcome... And cheapest!
Thank you again @oldbuffer and @Exedon
Can any of you guys confirm the shower model just by looking at the taps....? I have attached an image and because of the shower going hot and cold i require a new thermostatic cartridge, however i do not know the model details. I fear i will have to rip out this shower and start afresh!
Thank you!