Across:
8 Sabbath, (S-) Sting (trick), for the most part (k) (‘trick’ without ‘k’ = -TRIC-), and one of The Cars (model T = -T) (STRICT) demanding the rules are observed (STRICT),
9 Jasper is not part of practical jokes (‘Jasper’ is not part of ‘practical jokes’ = acticlok = COCKTAIL) in Manhattan? (Manhattan COCKTAIL),
10 Lippy type (EDGE) from golf club (wedge) needing no introduction (w) (‘wedge ‘ without ‘w’ = EDGE),
11 Made Sour (EMBITTERED) Kamikaze ultimately (‘kamikazE’ ultimately = E-) to drink (bitter = -BITTER-) in Mediterranean (Med = -M-ED) (EMBITTERED),
12 Slump (slump/laze = LOUNGE) from sudden movement (lunge = L-UNGE) grasping oxygen (oxygen = -O-) (LOUNGE),
14 Timetable (SCHEDULE) for outbuilding (shed = S-HED-) around college (-C-) and university (University of Limerick = -UL-) getting energy (-E) (SCHEDULE),
15 Bars (COCKTAIL LOUNGES) those in 9 across (‘cocktail’ = COCKTAIL) and 12 across (‘lounge’ = LOUNGE-) from starting school (starting ‘School ‘= -S) (COCKTAIL LOUNGES),
18 Henry (H-) as well as (-AND-) Mike (-M-) gets a shot in the arm (encouragement = -AID) (HANDMAID) from old servant (HANDMAID),
20 Don’t disappear (EMERGE) as English (E-) join forces (-MERGE) (EMERGE),
22 Greek island (Kos) says (= homophone indicator) (‘Kos’ = ‘COS) accommodation (LET-) by a bridge (‘a bridge’ = ‘abridge’ = cut) is going up (= reverse indicator) (cut = -TUC-) on time finally (‘timE’ finally = -E) (COS LETTUCE) in 14 down, for example (COS LETTUCE in ‘salad’),
24 A reminder of the injuries (SCAR) concealed by characters in Lewis Carroll (concealed by characters in ‘lewiS CARroll’ = SCAR),
25 Bird (TIT-) with a type of pad (-MOUSE pad) (TITMOUSE) is a common tweeter (TITMOUSE),
26 One (one = UNITED) trade unionist cutting rations (‘trade unionist’ cutting ‘rations’= deunit = UNITED).
Down:
1 Type of poker (STUD- poker) I (-I-) love (love in tennis = -O) (STUDIO) in the drawing room? (drawing room for artist = STUDIO),
2 Cover the ground with this (TILE) revolutionary (= reverse indicator) part of the Bucareli Treaty (part of the ‘bucarELI Treaty’ = elit = TILE),
3 Enfant terrible starts (‘Enfant Terrible’ starts = ET -) to create (create) trouble (= anagram indicator) (create = CETERA) (ET CETERA) with the rest (the rest = ET CETERA),
4 Back (back) up (= reversal indicator) (back = kcab) most of (k) (‘kcab’ without ‘k’ = -CAB) what’s on computer’s terminal (‘computerS’ terminal = S-) (SCAB) as a result of the recent cuts (SCAB)
5 Small (S-) company (Co = -CO-) car (model -T-) going to church (-CH) (SCOTCH), in spirit (SCOTCH),
6 Almost (d) catch (attend) (‘attend’ without ‘d’ = ATTEN-) ball (-DANCE) (ATTENDANCE) in the stadium watching the game (ATTENDANCE),
7 Pass one’s life acting (LIVE A LIE) with Victor (-V-), Earl (-E-) and the greatest boxer (Ali = A LI-) consumed by mischievous gossip (lie = LI- -E) (LIVE A LIE),
13 Celebrity (name = NA-ME) takes in Kildare (-KE-) and Dublin (-D) with Alf (Alf) sending up (= reverse indicator) (Alf = FLA-) (NAKED FLAME) one of those from The Inferno (NAKED FLAME),
14 Leaves (SALAD leaves) lover from El Salvador (‘lover’ from ‘El Salvador’ = lsaad = SALAD),
16 Nothing (O-) to do with rising (= reversal indicator) pitch (tar = -RAT-) from old (-O-) group of musicians (trio) starting to go off (t) (‘trio’ without ‘t’ = -RIO) (ORATORIO) Handel’s Messiah, for example (Handel’s Messiah, for example = ORATORIO),
17 Talked over difficulty (OPENED UP) of old (O-) writer (-PEN-) joining English (-E-) party up north (Democratic Unionist Party = -D UP) (OPENED UP),
19 Painting class (ART- class) at university (-U-) in Florida (Florida/ FL = F-L) (ARTFUL) is deceptive in a crafty way (ARTFUL),
21 Paul is out of sugar-apple (‘Paul’ is out of ‘sugar-apple’ = sgarpe = GRAPES) fruits (fruits = GRAPES),
23 Employer (operator/handler = USER) is sure? (sure) Wrong! (= anagram indicator) (sure = USER),
24 A narrow opening (SLIT) for Rob from Bristol (‘Rob’ from ‘Bristol’ = istl = SLIT).