My first attempt at this intriguing puzzle. My grid is almost complete apart from:
13A Tea ladies evacuated aged Roma people (5): I have SHAL?
30D: French composer's half finished medley (4). I have M?SS, so that could be either "mess" or "mass" depending on the French composer, either of which could mean "several things".This also means I am struggling with:
34A Treatment of poet's demise touching one in Scotland (7): I have D?O?ANE, where "ane" is "one in Scotland"?