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42d. "Rather poor, love entering US health system to clear asthma at last"(8) I have ?E?I?S?E

48d. "Raise song about union broken off, and one of its members"(6) I have ?U?N?A
I fear ICON SPOON may be incorrect for 54a.

54a should be iron cross, that should help with the down clues.

Thanks ginge, I have got the other two now. Isn't it amazing the difference having the correct letters makes!