Solution to 5A 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 Returning vehicle inspectors recalled final instalment of monetary aid (7) SUBSIDY {BUS<=}{DIS<=}{m...rY}
5 Stretch of land almost entirely neighbouring ravine (7) ?O?P?S?
10 Women wear this amidst anniversaries (4) SARI [HIPS]
11 Couple heading off settler broadcast messages through flight (3,7) AIR LETTERS {pAIR}{SETTLER}*
12 Old women charged by soldier for some Glaswegian meat (6) HAGGIS {HAGS} over {GI}
13 In Shanghai on vacation, drinking controversial hot energy drink made from fruits (8) SMOOTHIE {Sh...aI} over {MOOT}{H} with {E}
14 Around Australia, extremely hot whale heaves every now and then, suffering in sweltering conditions (4,5) HEAT WAVES {A} in {HoT+WhAlEs+hEaVeS}*
16 Rough, old-fashioned diamonds replaced with crown of 27 (5) ROWDY (-d+r)ROWDY
17 Sensational Avtaar - lively grids (5) GAMEY {GA{ME}Y}
19 Crude behaviour from a couple of locals joining leaders in India slamming masses (9) BARBARISM {BAR}{BAR}{In...a}{Sl...g}{Ma...s}
23 Learned people in Kuwait are tilting towards the West (8) LITERATI [T<=]
24 Stands slimy fellows when wife's gone (6) EASELS wEASELS
27 Vermilion from game "Bleeding heart" (4) RUBY [DD]
28 Nothing about leaving the new clinic modernised is part of scientific practice (7) TECHNIC {THE+N+ClinIC}*
29 One gossiping page wanting toy (7) RATTLER pRATTLER
DOWN
2 Blind character from Athens turned up a piece of fine workmanship (7) UNAWARE {NU<=}{A}{WARE}
3 Resistance-free cord in fiddle (5) STING STrING
6 Wild cat fur from old piece of land outside church (6) OCELOT {O}{LOT} over {CE}
9 Question about topless indecent fabric cut from below (5-8) CROSS EXAMINED {aCROSS}{EX}{MINED} Anno not clear
15 Following that hard trailing article on humour (9) THEREWITH {H}<=>{THE}{RE}{WIT}
18 Add zest to batting in a match (7) ANIMATE {IN+A}*{MATE}
21 Easy clue is, perhaps, this simple basically and not very verbose (7) SOLUBLE {Si...y}{vOLUBLE} Something is wrong in this clue
Reference List
Soldier = GI, Hot = H, Energy = E, Australia = A, Diamonds = D, Wife = W, Male = M, New = N, Page = P, Resistance = R, Old = O, Church = CE, English = E, Hard = H, On = RE, Large = L, Very = V, Western = W, India = I