Last two...
1d. Commendation is stopping Marshal getting uppity (6) ?r???e
10a. Find missing deliveries - quantity of music? (4) ???c
Aslo, just for my own peace of mind.
25a. M Brel's this month ousting British musical performer (8)
I've got 'Minstrel' - got the anagram of mrel but don't understand where the 'inst' comes from.