Across:
8 Spots (RASH-) Pope Innocent the Tenth (10th letter of “Pope Innocent the Tenth” = -E-) from second triptych (second triptych = -R) (RASHER) by Bacon (bacon RASHER),
9 Rest home (rest home = THEOREMS) design (= anagram indicator) proposed by mathematicians (THEOREMS),
10 Clip (clip/cut = CROP) from part of The Acropolis (part of “The Acropolis” = CROP),
11 Everyone (ALL-) gets to order (order = RO-DER) novel (= anagram indicator) about a foreign (a = -UN-) (ALL-ROUNDER), versatile type (ALL-ROUNDER),
12 College (C-) sweetheart (-LOVER) (CLOVER) stretched out over the lawn (CLOVER),
14 Score (MUSIC) with crack (POP) initially (= positional indicator) (POP MUSIC) produced by the band (POP MUSIC),
15 The jury is bound to be highly influenced by (DAMNING EVIDENCE) cursing (DAMNING) heard in the court (EVIDENCE) (DAMNING EVIDENCE),
18 Organises (= anagram indicator) the rates (the rates = THEATRES) for the players (THEATRES),
20 Ran away from guardsmen (“ran” away from “guardsmen” = gudsme = SMUDGE) with Mark (mark = SMUDGE),
22 Tweaked (= anagram indicator) Inca belief (Inca belief = BENEFICIAL) in one’s best interests (BENEFICIAL),
24 Lawmakers dismiss smear (“lawmakers” dismiss “smear” = lwak = WALK) from tramp (WALK),
25 Ten years (DECADE-) rent (rent) is only the half of it (half of “rent” = -NT) (DECADENT), reflecting what’s in moral decline (DECADENT),
26 Anoint (anoint = NATION) sick (= anagram indicator) in a large body of people (NATION).
Down:
1 Review (= reversal indicator) draws attention (Lo! = -OL) to retweet (retweet = rt = -TR-) from agency (Associated Press = AP = PA-) (PATROL) doing the rounds (PATROL),
2 Borders with white turnip (borders with ‘white turnip’ = WHIP) and birch (WHIP),
3 First Test (TRIAL RUN) will give you an indication how good the player (TRIAL) is at clear out (clear out = RUN) (TRIAL RUN),
4 Upset a legislative sample (“upset a legislative” sample = ET AL) in Rome and the rest (Latin “and the rest” = ET AL),
5 Get back (RECOUP) from Puerto Rico without taking in riot (“Puerto Rico” without taking in “riot” = pueroc = RECOUP),
6 Take top off (t) cake (“tart” without “t” = ART) in Paris – it’s new (Paris/French “new” = NOUVEAU) (ART NOUVEAU) with a stylish decorative and curvy design (ART NOUVEAU),
7 One of those forgettable types (AMNESIAC) names CIA (names CIA = AMNESIAC) mistakenly (= anagram indicator),
13 Free (= anagram indicator) agent (agent = -NTAGE) held by minister (Vicar = VI- CAR) (VINTAGE CAR) of transport a long time ago (VINTAGE CAR),
14 Hinges (= reversal indicator) drop off (sleep = PEELS) strips (PEELS),
16 Finish (ACHIEVE-) writing (from the 3Rs = -R) (ACHIEVER) success story (ACHIEVER),
17 Audacious type (INSOLENT) in stolen (in stolen = INSOLENT) convertible (= anagram indicator),
19 Model left demoralised (‘model’ left ‘demoralised’ = raised = RAISED) by what’s brought up (RAISED),
21 Imperial type (GALLON) from old France (“Gaul” = “gall” = GALL-) state (= homophone indicator) gets no (no) return (= reversal indicator) (no = -ON) (GALLON),
23 Small bit (IOTA) included in audio tape (included in ‘audio tape’ = IOTA),
24 Clever types (WITS) on the margins associated with wine and spirits (on the margins associated with “wine and spirits” = WITS).