If you look closely you can see there is a shower screen

I understand what you mean Sarah! I know you could see the glass screen. I'm using this design in my new build and yes I expect there to be water splashing in/on the bath but I don't think it matters unless someone decides to have a bath straight after someone has showered...even then it's mostly the wet floor tiles that are effected. To me it looks like there is a space of 1 metre from the bath to the screen. (5 tiles x 200mm each I'm thinking). I have also allowed 950-1000 depending on the bath I buy. Buying a 'back to wall' bath can save some space & cleaning!