Across:
8 Reviews (= reverse indicator) one (-I) bar study (law = -WAL-) for the papers (ID papers = DI-) (DIWALI) celebrated in India (DIWALI),
9 Lawrence (TE Lawrence = T--E) takes in Louvre (Louvre) complex (= anagram indicator) (Louvre = -RUE LOV-) (TRUE LOVE) with soul mate (TRUE LOVE),
10 Completely out of energy (DEAD) as it’s very late perhaps (DEAD),
11 Creates a barrier with cutting type of cable (BARBED WIRE) from old poet (bard = BAR-D) taking in Belgium (-BE-) with women (W-) from Ireland (-IRE) (BARBED WIRE),
12 Net result of (UPSHOT) a wake (‘a wake’ = ‘awake’ = UP) getting filmed (-SHOT) (UPSHOT),
14 Loss of face (COMEDOWN) in Cork (C-) opens my eyes to leaders (‘Opens My Eyes’ to leaders (= -OME) in Ulster (-DOWN) (COMEDOWN),
15 Wastes one time (FLOGS A DEAD HORSE) producing 24 across (‘flog’ = FLOG-) from South Africa (SA = -S A), 10 across (‘dead’ = DEAD) and 26 across, for the most part (s) (‘horses’ without ‘s’ = HORSE) (FLOGS A DEAD HORSE),
18 Prohibit (BAN-) supporter from The House (-JOIST) (BANJOIST) – one of those players likely to pull strings (BANJOIST),
20 Adapted (= anagram indicator) linage (linage = GENIAL) to be sociable (GENIAL),
22 Father (Rev) flipped over (= reversal indicator) (Rev =VER-) pests (-MICE-) serving up (= reversal indicator) unhealthy (-ILL = -LLI) (VERMICELLI) Italian dish (VERMICELLI),
24 Market local (FLOG) game (golf) on the rise (= reverse indicator) (golf = FLOG),
25 Give some thought to (MUSE-) taking starter (‘Taking’ starter = -T-) from type of menu (set menu = set) served up (= reverse indicator) (set = -TES) (MUSETTES) providing nutrition for those on their bikes (small bags/knapsacks carried by cyclists = MUSETTES),
26 Head of holly (head of ‘Holly’ = H-) roses (roses =-ORSES) (HORSES) produced by (= anagram indicator) Arabians (HORSES).
Down:
1 Roster (LINE UP) employed in the Garda station (LINE UP),
2 Staff (WAND) from magician’s bar (WAND),
3 A (-A-) club (-BAT-) on square (-T- square) occupying agents (CIA = CI-A) (CIABATTA) employed by sandwich makers (CIABATTA)
4 Mix (STIR) of cast iron sample (‘caST IRon’ sample = STIR)
5 Relative (mum = M-UM) admits taking head off (r) red herring (ruse) (‘ruse’ without ‘r’ = -USE-) (MUSEUM) and preserving the older bits (MUSEUM),
6 Dragged one’s feet (SLOWED DOWN) producing a fair amount of (half) 14 across (half of ‘comeDOWN’ = DOWN) after (= positional indicator) momentum was lost (SLOWED) (SLOWED DOWN),
7 Oscar (O-) and Vera (-VERA-)? Wesley (-WES) (OVERAWES) takes their breath away with the science! (OVERAWES),
13 Is taking drugs (HIGH) with Jersey (JUMPER) (HIGH JUMPER) athlete (HIGH JUMPER),
14 Court (CT = C-T) holds CEO (head) endlessly (d) (‘head’ without ‘d’ = -HEA-) (CHEAT) responsible for the double deal (CHEAT),
16 Two different holidays (leave + out = LEAVE OUT) to forget (LEAVE OUT),
17 A match for boxers coming to blows (DOG FIGHT) – a contest that’s up there with the best of them? (DOGFIGHT),
19 Encourage (INCITE) up (= reverse indicator) north (NI = IN-), most of (y) Belfast, for instance (‘city’ without ‘y’= -CIT-), approaching finish line (finish ‘linE’ = -E) (INCITE),
21 Houses (ABODES) a (A-) leading beat (leading ‘Beat’ = -B-) poet’s work (-ODES) (ABODES),
23 Group (LIST) no longer dismissed by Rolling Stone (‘no longer’ dismissed by ‘Rolling Stone’ = list = LIST),
24 First mate loses taste (‘first mate’ loses ‘taste’ = firm = FIRM) for outfit (FIRM).