Need to do up our bathroom. Thinking of replacing bath with a shower - not
going to Wet Room - but possibly a large rectangular tray with some "drying
off space"

Current floor is tongue and groove with carpet tiles. I know I really need
to cover it with ply - but wary of creating a step. I am considering
Kardean or vinyl flooring.

What can I get away with on the tongue and groove.Is there anything like a
levelling compound for wood? Fairly wide gaps between the boards

Also - if I take the tiles off my plasterboard walls I guess it will wreck
it. Considering a panel wall covering. Would you remove the tiles or leave
them on. Any recommendations - or things to avoid?