23a Person sharing quarters and uniform with ship's officer (8) ??a???t?
9d Honed lines for musicians - they should aim for perfect pitch (6,5) ground s?a??
18d It helps one see clearly what's rubbish (7) e?e???h
21d In West End, I am performing Shakespearean title role (5) t???n
Thank you, Lie-In King. I made a complete mess of the title of my post and ended up putting it on twice ! Crossword all done now, time to make dinner! Thanks again, Muzz