Solution to 11D 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 solve, if not solved by 1 PM.
ACROSS
1 Feel indignation about missing first award (6) RESENT pRESENT
4 Expert shot to contain almost well-built outlaw (8) PROHIBIT {PRO}{{HI{BIg}T}
9 First and second pocketed by soldiers (6) MAIDEN {M{AID}EN}
10 Yahoo has to bring in woman with brown hair (8) BRUNETTE {BRU{NET}TE}
12 OK, none left, quite contrary (3,5) ALL RIGHT [C&DD]
13 Despises intensely missing parking in dizzy bar hops (6) ABHORS {BAR+HOpS}*
15 Avoid channel ignoring time for kids mainly (4) DUCK DUC(-t+k)K
17 Man, gents' room mainly in ruins, so... (10) STRENGTHEN {GENTS+Room}*{THEN}
19 ...You will do this when things are terribly taking time (10) STRAIGHTEN {THINGS+ARE}* over {T}
20 Many cycling for an opening in the organisation (4) SLOT (+s)SLOT(-s)
23 Group of four in illegal trade with model (6) TETRAD {T} in {TRADE}*
24 Flying or sailing? No good to go (8) AVIATION nAVIgATION
27 Film duck swimming underwater without breathing equipment (8) SKINDIVE {SKIN}{DIVE}
28 Save Conservative from fire, that is more coloured with embers (6) ASHIER cASHIER
DOWN
2 Immobile cashboxes on rotation (5) STILL (+s)STILL(-s)
3 Noises disturbing the activity of the intellect (6) NOESIS*
5 Exceptional rule long time back (4) RARE {R}{ERA<=}
6 Spooner's forbidden ugly women with reticules (8) HANDBAGS (banned hags to handbags)
7 Model entering exotic hotel with bar for marriage proposal (9) BETROTHAL {T} in {HOTEL+BAR}*
8 Trotsky essentially the main cause for mutiny (7) TREASON {troTsky}{REASON}
11 Calling rogues as animals? (7) ?H?T?H?
14 Merit of book, readers heartily finished first reading (7) DESERVE {rESERVE}<=>{reaDers}
16 Maybe magicians' favourite vehicle, mainly dirty to take for a ride (4,5) CARD TRICK {CAR}{Di..y}{TRICK}
19 In a manner of speaking, alcoholic is extremely oblivious, yes (2,2,3) SO TO SAY {SOT}{Ob...uS}{AY}
22 Endlessly flattering Sultana (6) RAISIN pRAISINg
25 Language, it is before setter (5) IRISH {IRISH setter}
26 State of public house mostly ignoring time (4) AVER tAVERn
Reference List
Parking = P, Time = T, Model = T, No = N, Good = G, Conservative = C, Rule = R, Reading = R