1: Compete with life in France (3)
3: Offering resistance, cattle run wild (9)
8: Unappealing environment for a snooze (3)
9: Support sign for subordinates (11)
11: Siegfried's partner, Al, marries for portion of proceeds (9)
12: About....about right? Wrong! (3)
13: Noisy tunnel in Queens or The Bronx, for example (7)
15: Forgetful of cinemas craft (7)
16: Brought back sample of Gruyre; it's a touch more savory (7)
18: Stabs at centre-left defences (7)
20: Scale Ten after taxes (3)
21: His stable is unstable, it's found (9)
24: Black arts and demons concerned with Homer's issue? (4,7)
25: Fuss about a party (3)
26: Avoids seeds, pits, nuts (9)
27: Hear Native American appeal (3)