I love the look of the second in a hallway hung above a nice console

Thanks Margot. I think I've more or less got it sorted. The only challenge remaining, I think, is finding a way to give it a visual lift. It currently has floor to ceiling tiles in a standard size, square, and a very uninteresting colour with no texture - but in very good order. Very dull! I hate grout in showers so I'm thinking maybe some Mr Wetwall panelling or something similar over the tiles in the shower and on the new wall formed by moving the linen cpd, plus on a part wall along the long side of the shower to replace the glass screens that I insist must go (I'm a lazy cleaner and I hate cleaning glass!) Hopefully that would be enough to relieve the dullness of the existing tiles. Then some feature shelving over the new bath tub perhaps. Not yet decided whether to install a freestanding back-to-wall bath or a drop-in, but the latter might provide scope for some more feature tiling or panelling around it. I want to open the room directly to the outdoors but the current window opening is only 1200mm wide and the wall is 8 inches of solid concrete - not easy to cut to enlarge the opening - so I'm looking at either a hinged door with window inset into it or a standard size glass swing door with a narrow window beside for ventilation. My other challenge is doors for the relocated linen cpd, as the existing mirror doors have got to go! I loathe them. As the cpd will be visible from the living area, it needs stylish doors.

Are you having any lighting at all? You can overcome the lack of wall lighting by careful placement of down lights in the ceiling. Not perfect but will be OK. Do you need face level storage?

Thank you @Julie Herbert, we've decided to do the diy thing with trim around, that was a great idea. But yes, great point about boys using the mirror to do their posing when they get into that sort of a thing 😁