Across
1 Caterer lost it finally botching work (6) CAREER
4 Innovative Southern fiction (6) NOVELS
9 New coin (4) MINT
10 Shiny gelding giving birth to young ones! (10) GLITTERING
11 Take a while to have a proper place (6) BELONG
12 Double alcohol at midnight causing momentary pain (8) TWINGING
13 Rare, ruined, ringed revolutionary leftist (9)
15 Wander where all roads lead, reportedly (4)
16 The mothers held the others (4) THEM
17 Excelled? Not entirely certain, but did not fail (9)
21 Principals primarily practised satanic perversion (8)
22 Refreshed, calm after the downpour disappeared (6)
24 Air: scattered Phosphorus atoms proliferate here (10)
25 Unkind, heartless tart (4)
26 Suddenly attacked, defeated, beheaded (6)
27 The rest discovered in frenzied throes (6)
Down
1 Interject with jingle that’s popular (5,2) CHIME IN
2 Proportion observed in peroration (5) RATIO
3 Ready to get hitched, angry with girl for rejection initially (7)
5 To get alumnus ain’t complicated (6)
6 Shocking ego surge setter received (9)
7 Have to own, for example (7)
8 Extraordinary diet using dish prepared curiously (13)
14 Little bits of negativity? (9)
16 Plot of land or vehicle used to till it (7) TRACTOR
18 Impeccable administrator king sent down (7)
19 English plant explosive mines around Spain to blow up hostiles (7)
20 Plain stupid (6)