Across:
8 Most of (e) the (“the” without “e” = TH-) regiment (-R-) is not well (-ILL) (THRILL) in Rush (rush/buzz = THRILL),
9 Garda might view this (PHOTOFIT) as stolen (-HOT-) from the river (River Po = P-O) – is that healthy? (-FIT) (PHOTOFIT),
10 Fail to mention (OMIT) summits from one moment in time (summits from “one moment in time” = OMIT),
11 Point (compass point EAST) at French neighbour (GERMAN) (EAST GERMAN) who spent some time in Dresden in the past (EAST GERMAN),
12 Handy (USEFUL) for you and me (US-) to process (= anagram indicator) fuel (fuel = -EFUL) (USEFUL),
14 Hurried back (ran = NAR-) to bed (-COT-) with current (-I-) cold (-C) (NARCOTIC), as it might help one to sleep (NARCOTIC),
15 Where you might want to get shot of someone (PHOTOGRAPH ALBUM) in print (PHOTOGRAPH) with most of 21 down (most of “albums” = ALBUM) (PHOTOGRAPH ALBUM),
18 Nasty looks (sneers = SNE-ERS) over opening the Emmental (opening the “Emmental” = -E-) to go with the last of the Shiraz (last of the “Shiraz” = -Z-) (SNEEZERS) for those with allergies (SNEEZERS),
20 Great (G-) potential (= anagram indicator) wage (wage = -EWGA-) for women (-W) (GEWGAW) in the trinket shop (GEWGAW),
22 Trailblazer (PATHFINDER) is one making one’s own way in the world (PATHFINDER),
24 Those on the hill (those on The Hill 16 = DUBS) upset (= reversal indicator) Old Bob (-S) from The Branch (bud = DUB-) (DUBS),
25 Took time walking (STROLLED) from port to port (port = left side = L to L = -LL-) in busy (= anagram indicator) Dorset (Dorset = STRO-ED) (STROLLED),
26 Sister (Sr = S-R-) protects top of head (top of “head” = -H-) from devilish creature (-IMP) (SHRIMP) swimming in the sea (SHRIMP).
Down:
1 Concerns of writers (THEMES) from border (-HEM-) seduced by set- (set = T-ES) -back? (= reversal indicator) (THEMES),
2 Lighten up perhaps (DIET) and take the figs out of digestif (take the “figs” out of “digestif” = diet = DIET),
3 Beluga (Beluga = BLUE -AG) swimming (= anagram indicator) around Florida (FL-) (BLUE FLAG) – it’s a sign of a clean beach (BLUE FLAG),
4 Boiled (= anagram indicator) soup (soup = OPUS) is artist’s handiwork (OPUS),
5 Takes up space (LODGER) in someone else’s house (LODGER),
6 Look for a partner (COURT) going around (O-) with one of The Kinks (one of the kinks = kink/flaw = -F LAW) (COURT OF LAW) at the bar (COURT OF LAW),
7 One (-I-) sheepish type (-RAM-) in odd-looking (= anagram indicator) suit (suit = TI-SU) (TIRAMISU) is sweet on one of those in Italian restaurant (TIRAMISU sweet/dessert),
13 Clerical type (FATHER-) hides head (-HOOD) (FATHERHOOD) – it explains a number of issues perhaps (issues/offspring / FATHERHOOD),
14 Closes in on (NEARS) new (N-) listeners (-EARS) (NEARS),
16 Crab (female crab = HEN) finds Labour (Labour PARTY) (HEN PARTY) is no place for the men (HEN PARTY),
17 Danger this will go badly wrong (HIGH RISK) for prominent (HIGH) menace (RISK) (HIGH RISK),
19 If Baudelaire loses aura (“Baudelaire” loses “aura” = bdelie = EDIBLE) it will go down well (EDIBLE),
21 Records (ALBUMS) those worthless types (-BUMS) behind gangster (Al Capone = AL-) (ALBUMS),
23 Stylish and confident guy (DUDE) guarded – did he lose the rag? (“guarded” without “rag = uded = DUDE),
24 Bank’s dividend disclosure (banks/sides “dividend disclosure” = DIRE) is terrible (DIRE).