At Chennai for a wedding, unfortunately no time to meet anyone.
Solution to 8D 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.
ACROSS
1 Extremely rough translation of Socrates (8) COARSEST*
5 Workplace no longer using internal combustion engine (6) OFFICE {OFF}{ICE}
9 Tommy’s secret (7) PRIVATE [DD]
10 They might be keeping tabs on all singles, etc., about to get into cross-dressing (7) SCORERS {SCO{RE}RS*}
11 A broken pen and a lack of inspiration (5) APNEA {A}{PEN*}{A}
12 Lift operator crushed ... Om Shanti (8) HOISTMAN*
13 Saved a little chap getting hurt (6) CACHED {Chap}{ACHED}
14 Vehicles of love-laden, excited escorts (8) SCOOTERS {O} in {ESCORTS}*
18 New listeners: oddly, it’d be one flank of a horse or a car? (8) NEARSIDE {N}{EARS}{ItD+bE}
20 Come home from metro station, rushing briskly and taking only seconds (6) RETURN {fRom}{mEtro}{sTa...n}{rUs...g}{bRisk}{aNd}
23 Having the capacity to live without a drop of refreshing fluid (8) VARIABLE {V{A}{Re...g}IABLE}
25 Rude to change sides for status (5) CLASS C(-r+l)LASS
27 Trying a sour rum (7) ONEROUS {ONE}{SOUR*}
28 File away any rough chips, helping insure very even openings (7) ARCHIVE Acrostic
29 In poor taste to have ministr
y ultimately moving back to
some coal plant production (3,3)
FLY ASH FL(+y)YASH(-y)
30 Husband under-prepared; daughter and son get centuries (8) HUNDREDS {H}{UNDER*}{D}{S}
DOWN
1
A picnic arranged around two pieces of
sandwiched
essence of chillies (9)
CAPSAICIN {A+PICNIC}* over {SA
n...h}
2 Coin tossed after many denials, essentially, of a particular charge (7) ANIONIC {COIN*} after {mANy}{denIals}
3 Sailors from a great distance taken in by soothsayers (9) SEAFARERS {SE{AFAR}ERS}
4 Look at the rage! (6) SEETHE {SEE}{THE}
6 Bob regularly rejected team on left (5) FLOAT {TeAm+On+LeFt}<=
7 Repeat attire accidentally worn by me at last (7) ITERATE {ATTIRE}*{mE}
8 Different sizes under discussion (4) E?S? (Addendum - ELSE (~ ells) - See comments)
10 Replacement of wife for new betrayer (6) SWITCH S(-n+w)WITCH
15 Ice-cold A.I. replaced an organic substance found in plants and animals (5,4) OLEIC ACID*
16 Creative artists’ plea for help involving messy gents room for starters! (9) SONGSTERS {SO{GENTS*}{Room}S}
17 Homes in which walls of blackwood are swapped for bricks (6) ADOBES A(-b+d)DO(-d+b)BES
19 College Fashion Day came! (7) ACADEMY*
21 Nuke going off over gangster Gussalufz opposed? (7) UNALIKE {UN{AL}{I}KE*}
22 When you relive Javed’s shot getting cup, limitlessly (4,2) DEJA VU {JAVED*}{cUp}
24 Images of tragic onslaughts (5) ICONS [T]
26 Turn left and feminine! Game? (4) GOLF {GO}{L}{F}
Reference List
About = RE, New = N, Husband = H, Daughter = D, Son = S, Wife = W, Gangster = AL, Left = L, Feminine = F