Across:
8 Some interim data (some ‘interim data’ = erim da) reviewed (= reversal indicator) (erimda = ADMIRE) with respect (ADMIRE),
9 Greenish-blue (AQUA-) spirit (-R-UM) found around summit on Islay (-I-) (AQUARIUM) out of tank (AQUARIUM),
10 Rooted (FIRM) to tree (FIR-) on motorway (-M) (FIRM),
11 It’s about (RE-) a (-A-) family member (-SON-) who is gifted (-ABLE) (REASONABLE) and fair (REASONABLE),
12 Works at The Bar (SERVES) and does a job for the jury (SERVES),
14 Revolutionary (CHE-) light spray (-MIST-) initially stimulating (initially ‘stimulating’ = -S) (CHEMISTS) for drug dealers (CHEMISTS),
15 Stops along the route (RAILWAY STATIONS) in bar (RAIL-) near course (-WAY) for the guards (STATIONS) (RAILWAY STATIONS),
18 Sea lunch (sea lunch = LAUNCHES) cooked (= anagram indicator) in The Marine for the boatmen (LAUNCHES),
20 Mythologist downs tools (“mythologist” downs/without “tools” = myhgit = MIGHTY) – it’s great for the locals (it’s “great” for the locals = it’s MIGHTY),
22 Class (TYPE-) is responsible for volume (volume/book = -WRITER) (TYPEWRITER) typical of secretarial college (TYPEWRITER),
24 Rows (OARS) with co-authors losing touch (‘co-authors’ losing ‘touch’ = oars = OARS),
25 Turns up (= reversal indicator), Sally (sally = raid = DIAR-) got awards at university (firsts = 1STS = -ISTS) (DIARISTS) with a number of writers synonymous with the Daily Record (DIARISTS),
26 Artist leaves train station (‘artist’ leaves ‘train station’ = nation = NATION) in the country (NATION).
Down:
1 Offer suggestions (ADVISE) to Davis (Davis = ADVIS-) negotiating (= anagram indicator) with European leader (‘European’ leader = -E) (ADVISE),
2 He’s not in Flemish (‘hes’ not in ‘Flemish’ = flmi = FILM) motion picture (FILM),
3 State (State of NEBRASKA) of a banker’s (a bankers = NEBRASKA) mistake (= anagram indicator),
4 A tad (a tad = DATA) revolting (= reversal indicator) with numbers to crunch (DATA),
5 Mark’s successor (EURO- successor to German mark) gets capital punishment (capital ‘punishment’ = -P-) for extreme crime (extreme ‘crime’ = -E) (EUROPE) in our community (EUROPE),
6 Doing the arrangement (ORGANISING) for mouthy type (ORGAN-) at Number One (-I-) getting to do a number (-SING) (ORGANISING),
7 Report (BULLETIN) of university (University of Limerick = -UL-) accommodation (-LET-) in storage site (B-IN) (BULLETIN),
13 Lover’s tune (lovers tune = VOLUNTEERS) adapted (= anagram indicator) by those who weren’t conscripted (VOLUNTEERS),
14 The total expenditure (COSTS) of removing wrens from crow’s nests (removing ‘wrens’ from ‘crows nests’ = costs = COSTS),
16 Breakdown (ANALYSIS) of Asians (Asians = ANA-SIS) travelling (= anagram indicator) around central Ireland (central ‘Ireland’ = -L-) with foreign currency (yen = -Y-) (ANALYSIS),
17 Having a thing for (ADMIRING) most those (e) in 8 across (‘admire’ without ‘e’ = ADMIR-) and in (-IN-) Government (-G) (ADMIRING),
19 Sarah’s (Sarahs = HARASS) devious (= anagram indicator) with Harry (harry/attack = HARASS),
21 Fear and trembling (TERROR) on first tee (first ‘tee’ = T-) leads to inaccuracy (-ERROR) (TERROR),
23 Revolutionary (= reversal indicator) held by Mao Tse-tung (held by Mao Tse-tung’ = Tse-t = TEST) put on trial (TEST),
24 Seedy types (OATS) of tomatoes released to me (‘tomatoes’ released ‘to me’ = atos = OATS).