Solution to 29A 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 Champion's back! (7) SUPPORT [DD]
5 One's buried in mobile, never shifting (7) VEERING {VEER{1}N}*G 'G' from?
9 Sappers boy consumed by disease, initially got sympathetic response (9) RESONATED {RE}{SON}{ATE}{Di...e}
10 Oddly look in for ground (5) FLOOR {F{LoOk}OR}
11 Simplicity of native English bum (7) NAIVETE {NATIVE+E}*
12 Connect Aryans had with a sweet liquid source (7) NECTARY [T]
14 Oh! Love fresh, cold/hot, cheap brew (5) HOOCH {OH+O}*{C}{H}
16 Report by government guys! On time! (9) STATEMENT {STATE}{MEN}{T}
19 Barbies, consuming sorbet endlessly for ringers! (9) DOORBELLS {DO{sORBEt}LLS}
22 Letter at the back, backwards! (5) THETA {AT<=}<=>{THE} (Correction - {AT}{THE<=}<= See comments)
23 Recall manoeuvres Cinderella deployed! (7) RESCIND [T]
24 Wine stains in similar manner (7) MARSALA {MARS}{A LA}
29 Lords over the French striptease dancers (7) P?E?E?S (Addendum - PEELERS {PEE{LE}RS} - See comments)
30 Discussion remains misguided (7) SEMINAR*
DOWN
1 Crushed noisily, crushed violently around, once in the middle (9) SCRUNCHED {SCRU{oNCe}HED*}
2 One eating sea food spreads one scoop virus!! (11) PISCIVOROUS {1+SCOOP+VIRUS}*
3 Trace naked staff at a night club (5) OUNCE bOUNCEr
4 Scraps start-up consuming time and energy (7) TATTERS {START}* over {T}{E}
5 Loved antagonistic part of Upanishads (7) VEDANTA [T]
6 Fine! Face it without a working professional (9) EFFICIENT {FINE+FaCE+IT}*
7 She saved Odysseus at home with love (3) INO {IN}{O}
8 King abducted by murderous left-wing writer (5) GORKY {GOR{K}Y}
15 Yes! His bride managed to blend (9) HYBRIDISE {Y+HIS+BRIDE}*
17 Mostly cultivate an oil seed (3) TIL TILl
20 Left persons who avoid duty in absence of leader for those who are there to stay! (7) LODGERS {L}{dODGERS}
21 Almost identical vessels or boats in China (7) SAMPANS {SAMe}{PANS}
25 True male territory (5) REALM {REAL}{M}
27 He resides in each extremist's heart! (3) CHE Semi&lit
Reference List
Sappers = RE(Royal Engineers), English = E, Cold = C, Hot = H, The in French = LE, Time = T, Energy = E, King = K, Yes = Y, Right = RLeft = L, Male = M