Solution to 12A has been deliberately left unsolved and is to be answered only by a non-regular / novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.
Open for anyone to answer, if not solved by 1 PM.
ACROSS
1 Swilling hooch with boss in empty cubicle? There's no alternative (7,6) HOBSONS CHOICE {HOOCH+BOSS+IN}*{Cu...lE}
9 One disparaging rebellious socialist penning essay on principle of ownership (9) DETRACTOR {RED<=} over {TRACT}{Ow...p}
11 Brilliant rounds against member in bridge (10) CANTILEVER {C{ANTI}LEVER}
14 Holds member overwhelmed by drinks (7) ALLEGES {AL{LEG}ES}
16 Way to enthral date with excellent stir-fried noodle dish (3,4) PAD THAI {PA{D}TH}{A1}
17 Correctly limiting operation by Indigo, ultimately it's a form of market dominance (7) DUOPOLY {DU{OP}{i...gO}LY}
19 Remarking about hotel's mediocrity (7) NOTHING {NOT{H}ING}
21 Bond in tuxedo at hotel (4) OATH [T]
22 Meeting couple of criminals to secure Ecstasy before start of rave (10) CONFERENCE {CON}{F{E}{Rave}ENCE}
25 File, one with bugs primarily found in search for potentially harmful software (5,4) LOGIC BOMB {LOG}{1}{C{Bugs}OMB}
26 Declared independence, inspired by a revolutionary (5) AIRED {A}{I}{RED}
27 Meme is on mercurial leader of America — accurate to a certain extent (2,4,7) IN SOME MEASURE {MEME+IS+ON}*{Am...a}{SURE}
DOWN
2 First perhaps in viva about noise (7) ORDINAL {OR{DIN}AL}
3 Extremely sexy maiden and old ruler in snap (7,3) SMOKING HOT {S{M}{O}{KING}HOT} Semi&lit
4 Jog naked after consuming bhang finally (5) NUDGE {NUD{b..nG}E}
5 Protect pants with stylish fastener (6,3) COTTER PIN {PROTECT}*{IN}
8 Musicians at centre in Akron playing funny genre of music (4,3,4) ROCK AND ROLL {m..iCi..s} in {AKRON}*{DROLL}
10 One seen at top of each page is boss of company organising marathons? (7,4) RUNNING HEAD [DD]
13 Opinion pieces in different dailies about mounting corruption (10) EDITORIALS {DAILIES}* over {ROT<=} Semi&lit
15 Groom may snore after drinking alcohol heartily! Understood (3,2,4) SAY NO MORE {MAY+SNORE}* over {alcOhol}
18 Old cheat captivating model with a good figure (7) OCTAGON {O}{C{T}{A}{G}ON}
20 One who disregards forger in building passing francs (7) IGNORER {fORGER+IN}*
23 Sack contains black thread (5) FIBRE {FI{B}RE}
24 Clone obtained by hi-tech operation (4) ECHO [T]
Reference List
Socialist = RED, Date = D, Operation = OP, Hotel = H, Ecstasy = E, Independence = I, Revolutionary = RED, Maiden = M, Old = O, Ordinary = O, Female = F, Island = I, Model T, Good = G, Francs = F, Black = B
