Beside an outside wall?

Or in a corner, so 2 walls around loo you mean?

Hiya, just a wall on one side of the toilet for a toilet roll holder ideally.

swap the toilet and vanity, and make the side of the shower a wall to hang your toilet roll,

toilet roll aside you don't want the toilet where it is

A half height nib wall with glsaa on top is all you need

Yeah, swap vanity with loo. We had the same in an ensuite and used one of these.

as suggested by siriuskey...the wall beside the shower can be full height or up to door height or only lower with glass above but you should consider thinner vanity and shower to make more walking and standing space between fixtures

The plan above looks good but hang the entry door to bathroom to left hung so you are not visible if door opened

Also shower wall by wc as glass, move the bath off centre to right and have open shelves by left Wc under bath end with toilet roll holder inside shelves

Have you considered moving shower to in front of bath to create a wet area... Then toilet and vanity can go closer to door and shower is larger without door opening clash. Other option is shower and toilet across windows with bath along side wall with vanity on opposite side wall.

Okl plan is great as usual

but there's always so many options depending on choice of fixtures and available space but also like the side by side bath and shower but my special favourite is a separate powder room

Our main bathroom door opens into our open shower door like that. It is a royal PITA if one kid is trying to out of the shower when another kid opens the main door. Lots of bruised fingers and scrapes shins from door collisions. And of course little kids will leave the shower door ajar so I’ve almost smashed it several times when I open the main door to clean up etc. Whatever you do, find a door solution!

You could put a barn door hanging hall side