No 12079, Monday 07 Aug 2017, Anon

ACROSS
1   To pull last man to paradise… (6) HEAVEN {HEAVE}{maN}
4   … is undeniably popular feat (6) INDEED {IN}{DEED}
9   Heads of Zambia incredulously taste international pasta (4) ZITI Acrostic

10 Firm, initially nascent, started, was ruined (10) CONFOUNDED {CO}{Na...t}{FOUNDED}
11 Dishonour tipsy magistrate losing speed (6) STIGMA MAGISTrate*
12 Pure continent (8) CELIBATE [DD]
13 Indite our bizarre scholarship (9) ERUDITION*
15 Devil’s companion gets rid of Republican (5) FIEND FrIEND
16 Brewed meads with cheeses (5) EDAMS*
18 Regret blurred polo images cutting out mare’s head (9) APOLOGISE {POLO+ImAGES}*
22 Response to chemical process (8) REACTION [DD]
23 Remove ringleader from balcony of kitchen (6) GALLEY GALLErY
25 One to distribute perfume to teenager (10) ADOLESCENT {A}{DOLE}{SCENT}
26 Made fermented drink (4) MEAD*
27 Absentee back on display (2-4) NO-SHOW {ON}* [RA] (Correction {ON<=} {SHOW} - See comments)
28 Start gauging scope of farm (6) GRANGE {Ga...g}{RANGE}

DOWN
1   Operator to replace fifty with one in sheath (7) HOISTER HO(-l+i)ISTER
2   Mimicry of a clang (5) APING {A}{PING}
3   Delight in every other dean’s slogan (7) ENCHANT {dEaN}{CHANT}
5  Thin long strip of pasta for dimwit (6) NOODLE [DD]
6   Dignifying two Englishmen, for the most part, not flashy (9) ENNOBLING {ENg...n}{NO BLING} What's the role of 'for the most part' (Addendum - {ENg...n}{NOt}{BLING} - See comments)
7   Thought about old newt (5,2) DWELT ON*
8   Alone, cupid came anon in disguise (13) UNACCOMPANIED*
14 Do loud projectiles hit homes? (9) DOMICILES {DO}{MICILES}(~missiles)
17 Short don to study at German city (7) DRESDEN {DRESs}{DEN}
19 Less heavy barge (7) LIGHTER [DD]
20 Witness bellhop infiltration (7) SEEPAGE {SEE}{PAGE}
21 Every other Friday, small firm has debacle (6) FIASCO {FrIdAy}{S}{CO}
24 Lagoon in Bali mansion (5) LIMAN [T]

GRID