Across:
8 Institute (-I-) in Newry (Newry = W-NERY) moving (= anagram indicator) (WINERY) business responsible for developing port (WINERY),
9 A (A-) dodgy (= anagram indicator) crime (crime = -MERIC-) article (-AN) (AMERICAN) from The New Yorker? (AMERICAN),
10 The end product of using 26 across (grapes) in 8 across (winery) (WINE is the end-product of ‘grapes’ in ‘winery’) for press release? (WINE),
11 In a manner of speaking (ENGLISH-), worker (-MAN) (ENGLISHMAN) lives in a castle traditionally (ENGLISHMAN lives in his castle, as the saying goes),
12 Megalomaniac releases income (‘megalomaniac’ releases ‘income’ = mgalaa = MALAGA) from Iberian port (MALAGA),
14 Miss (OVERLOOK) Ring (O-) and Victor (-V-) Ward (-ER-) checkout? (-LOOK) (OVERLOOK),
15 All the crows, for instance (Crow nation = NATIVE AMERICANS), in 19 down (NATIVE) and 9 across (AMERICAN-) on the back wires (back ‘wires’ = -S) (NATIVE AMERICANS),
18 A fat cat (SAVANNAH cat) in Georgia (SAVANNAH),
20 It follows, the question (ANSWER follows the question) is key (ANSWER),
22 Whip up (FAN) what the correspondents produced (LETTERS) (FAN LETTERS) for The Star – who will appreciate them? (FAN LETTERS),
24 Some challenge a regulation (some ‘challenge a regulation’ = GEAR) for the fishermen (fishing GEAR),
25 Dietary concern for Arabian (for Arabian horse = HAY) with high temperature (FEVER) (HAY FEVER) leads to irritation during the season (HAY FEVER),
26 Don’t leave godparents (‘dont’ leave ‘godparents’ = gpares = GRAPES) the Juicy Fruits (GRAPES).
Down:
1 No art in satirical (no “art” in “satirical” = siical = SILICA) piece coming from The Stones perhaps (SILICA),
2 Charity event raising funds (FETE) for Aster leaving Free State (‘Aster’ leaving ‘Free State’ = feet = FETE),
3 Work in the pool (work in the typing pool = TYPE-) with French (-F-) champion (-ACE) (TYPEFACE) – that could be bold! (bold TYPEFACE),
4 It comes as a blow (BANG) to Belgian – no lie! (‘Belgian’ – no lie/ without ‘lie’ = bgan = BANG),
5 Strong wish (DESIRE) to brief (k) bureau (‘desk’ without ‘k’ = DES-) representing Ireland (-IRE) (DESIRE),
6 For flipping crabby types (FISH SLICES), they are perfect for anyone picking up the bass (FISH SLICES),
7 A (-A-) top Clos (top ‘Clos’ = -C-) in Burgundy (burgundy = M-AROON) (MACAROON) produces a biscuity type of treat (MACAROON),
13 Manila (Manila = ANIMAL) novel (= anagram indicator) has a long sentence (LIFE) (ANIMAL LIFE) to do with fauna (ANIMAL LIFE),
14 Hates leaving homeopaths (‘hates’ leaving ‘homeopaths’ = omoph = OOMPH) with something extra (OOMPH),
16 Reviews (= reversal indicator) Indian music (raga = agar) a couple of times (AGAR-AGAR), as it’s a cultural phenomenon at The Strand (in seaweed / biological culture = AGAR-AGAR),
17 Course (ROAD) for recruit (recruit/take on = SIGN) (ROAD SIGN) playing a big part in traffic management (ROAD SIGN),
19 Retiring (= reversal indicator) old foreign political leader (Evita = -ATIVE) finds nationalist (N-) (NATIVE) in local (NATIVE),
21 Cleared (ERASED) out of Red Sea (red sea = ERASED) craft (= anagram indicator),
23 Seafront has no soft (‘seafront’ has no ‘soft’ = earn = EARN) bank (EARN),
24 Flips (= reversal indicator) record (log = GO-L) about a (-A-) (GOAL) dream (GOAL).