Across:
1 Throws away (wastes) reports (= homophone indicator) (‘wastes’ = ‘WAISTS’) of tailor’s measurements (WAISTS),
4 Everyone (ALL-) with green (green) mixture (= anagram indicator) (green = -ERGEN) (ALLERGEN) producing dust (ALLERGEN),
9 The final act perhaps (LASTLY) introduces Slave to Love (introduces ‘Slave To Love’ = -STL-) consumed by position (lay = LA-Y) (LASTLY),
10 French native (SAVOYARD) cabbage (savoy cabbage) cut (y) (‘savoy’ without ‘y’ = SAVO-) behind the house (-YARD) (SAVOYARD),
12 Presumably, you’d be over the moon if you had a job here (WORKSPACE) in facility for those who value memory (computer memory storage = WORKSPACE),
13 Queues (LINES) at the end of 14 across (end of ‘straight line’ = LINE-) can be endless (end ‘lesS’ = -S) (LINES),
14 In America, the cops ask you to walk it if they think you’ve been drink-driving (STRAIGHT LINE) coming direct (STRAIGHT) from bar (LINE) (STRAIGHT LINE),
18 Opening 14 across (opening ‘straight line’ = STRAIGHT) and most of 3 down (most of ‘talks’ = TALK) (STRAIGHT TALK) produced candid conversation (STRAIGHT TALK),
21 Most of (n) the range (oven) (‘oven’ without ‘n’ = -OVE-) is behind (= position indicator) the hotel (H-) and left (-L) (HOVEL) of the shack (HOVEL),
22 Overworked (HACKNEYED) pair of journalists (hack + ed = HACK-ED) concealing desire (yen) to retire (= reverse indicator) (yen = -NEY-) (HACKNEYED),
24 Woollen twill fabric (SERGE-) central to pants (central to ‘pANTs’ = ANT) (SERGEANT) – the one with stripes at the base (SERGEANT),
25 Don to take a dip (don/put on BIKINI to take a dip/swim) in top beach (top ‘Beach’ = B-) near Island (-I-) Family (-KIN-) Holiday Centre (‘holIday’ centre = -I) (BIKINI),
26 Has no money (SHORT-) for his (his) problem? (= anagram indicator) (his = -ISH) (SHORTISH) For how long – not very long? (SHORTISH),
27 Wrong (= anagram indicator) dosage (dosage = SEA DOG) of antiquated salt (old salt/ = experienced sailor = SEA DOG).
Down:
1 Very excited (WILD) women (W-) set (set) dancing (= anagram indicator) (set = -EST) (WILD WEST) is bound to attract the cowboys (WILD WEST),
2 Risk-takers (INSURERS) certainly (-SURE-) in (IN-) opening (= positional indicator) a fair amount of (half of) bars (half of ‘baRS’ = -RS) (INSURERS),
3 Agree to leave Great Lakes (‘agree’ to leave ‘Great Lakes’ = tlaks = TALKS) for negotiations (TALKS),
5 Take off (LEAVE) from America (A) with the French (LE-) cagy (cagy) criminal (= anagram indicator) (cagy = -GACY) (LEAVE A LEGACY) to sort out concerns of an executor (LEAVE A LEGACY),
6 Divorcee (EX-) from Ring (-O-), by Jupiter (-PLANET) (EXOPLANET), is out of this world? (EXOPLANET),
7 Leo won’t stay in any longer (‘Leo’ won’t stay in ‘any longer’ = anyngr = GRANNY), and that’s an issue for the great-grandparents presumably? (GRANNY),
8 A desire to expose (NUDISM) acts from music stand (‘acts’ from ‘music stand’ = musind = NUDISM),
11 Those pressed for money (CASH MACHINES) change (CASH) a (-A-) church (-CH-) overlooked by collieries (mines = M-INES) (CASH MACHINES),
15 Has a mind (INTELLECT) to cool (IN-) it ultimately (‘it’ ultimately = -T-) for novice (learner = -L-) in return, from a political perspective (elect = -EL-ECT) (INTELLECT),
16 Young man (LAD-) with ponytail (‘ponY’ tail = -Y-) and black cap (blackcap/warbler = -BIRD) (LADYBIRD) in Beetle (LADYBIRD),
17 Pulling someone’s leg (-KIDDING) after (= position indicator) school (S-) (SKIDDING) playing on thin ice perhaps (SKIDDING),
19 Follows (CHASES) American (-A-) consumed by chess (chess) play (= anagram indicator) (chess = CH-SES) (CHASES),
20 Embellish (OVERDO) those characters in Mod Revolution (those characters in ‘mOD REVOlution’ = odrevo) going all the way back (= reverse indicator) (odrevo = OVERDO),
23 Inched away from Indo-Chinese (‘inched’ away from ‘Indo-Chinese’ = oinse = NOISE) racket (NOISE).