Across:
1 Indian leaves Scandinavian (‘Indian’ leaves ‘Scandinavian’ = scanav = CANVAS) in the bottom of Ring (CANVAS is on the bottom of a boxing ring),
4 It’s not natural (DRAMATIC) to play (DRAMA-) it (it = -TI-) around (= reversal indicator) college (-C) (DRAMATIC),
9 No time for redemption (no ‘time’ for ‘redemption’ = redpon = PONDER) of muse (PONDER),
10 How precious is it (VALUABLE) for a (-A-) lawyer (-BL-) to be taken in by the asking price? (value = VALU-E) (VALUABLE),
12 The director’s handling of the play (TREATMENT) performed in The Theatre (TREATMENT),
13 Subject (THEME) of hatemonger releasing organ (‘hatemonger’ releasing ‘organ’ = hteme = THEME),
14 Burst a blood vessel (LOSE PATIENCE) by the sound of it (= homophone indicator), when the doctors can’t find who is sick (‘lose patients’ = ‘LOSE PATIENCE’),
18 Did The Vikings use this to find us (MAP OF IRELAND) or did it give away our position? (MAP OF IRELAND),
21 First pint (first ‘Pint’ = P-) is on the house (-ROOF) (PROOF) for The Confirmation (confirmation = PROOF),
22 Reading (R-) issue (edition = -E-DITION) about new (-N-) (RENDITION) performance (RENDITION),
24 Whet one’s appetite (INTEREST) with one’s cup of tea (‘it’s my cup of tea’ = INTEREST),
25 No art in satirical (no ‘art’ in ‘satirical’ = siical = SILICA) piece coming from The Stones perhaps (SILICA),
26 Forgiving (EXCUSING) deranged (= anagram indicator) genius (genius = E-USING) holding wrong (-X-) key (music key -C-) (EXCUSING),
27 Produced (= anagram indicator) a scent (a scent = STANCE) with attitude (STANCE).
Down:
1 A plastic (a plastic = CAPITALS) explosive (= anagram indicator) produced by Moscow and Beijing (examples of CAPITALS),
2 Old toffee (NONSENSE) from Blarney (NONSENSE),
3 Keeping an eye open (ALERT) for a typically drunk (ALE-) retweet (-RT) (ALERT),
5 Study Apache smoke signals (READ THE SIGNS) to recognise impending trouble (READ THE SIGNS),
6 A line under one’s nose (MOUSTACHE) is from grape juice (grape juice = must = (M-UST-) covering blob (-O-) on sore spot (-ACHE) (MOUSTACHE),
7 Unstable (= anagram indicator) lab set (lab set = TABLES) used by the mathematicians (TABLES),
8 Had the bit between one’s teeth (CHEWED), as revolutionary (CHE-) got married (-WED) (CHEWED),
11 Put away (SENT TO PRISON) perfume (‘scent’ = ‘SENT’) say (= homophone indicator), and tips for the Oriental (tips for ‘The Oriental’ = TO) -American joint (PRISON) (SENT TO PRISON),
15 Farm’s plot (farms plot = PLATFORMS) runs (= anagram indicator) by the sides of the station (PLATFORMS),
16 Half the group (half the ‘PAck’ = PA-) playing (= anagram indicator) violin (violin = -VILION) (PAVILION) in the summer house (PAVILION),
17 Armadillo, for instance (EDENTATE), from The Garden (Garden of EDEN-) State needs no introduction (s) (‘state’ without ‘s’ = -TATE) (EDENTATE),
19 Reviewing (= reversal indicator) writer (ed = -DE) is (is = -SI-) put (put) off by the ending (t) (‘put’ without ‘t’ = pu = UP-) (UPSIDE) – what’s the positive implication of that? (UPSIDE),
20 Ned is not part of deception (‘Ned’ is not part of ‘deception’ = ceptio = POETIC) – and there’s a kind of justice in that (POETIC justice),
23 Dopey is one (IDIOT) gnome leaving in good time (‘gnome’ leaving ‘in good time’ = iodti = IDIOT).