Solution to 7A 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
7 Two sweethearts crushing Kelvin's son? Clowns (5) ?O?E? (Addendum - JOKES {JO}{K}{swEet}{S} - See comments)
8 Gave betel nuts and aubergine, maybe (9) VEGETABLE*
10 Excellent singer, almost in ecstasy (6) DIVINE {DIVa}{IN}{E}
11 Virus spreading at England borders, surmounted vaccine primarily and endured (8) SURVIVED {VIRUS}*{Va...e}{En...nD}
12 Withdrew from performance as role was subdued (8) DEPARTED {DE{PART}ED}
13 Ball takes edge to deviate (4) BEND {B}{END}
15 Always enters house by east or other side (7) REVERSE {R{EVER}S}{E}
17 Worrying after son's accommodation (7) SEATING {EATING}<=>{S}
20 Turn around for watering-hole (4) POOL<=
22 Responded to a news broadcast on leftist (8) ANSWERED {A+NEWS}*{RED}
25 Husband's relative in capital of Georgia gets nostalgic (8) HAUNTING {H}{AUNT}{IN}{Ge...a}
26 Country is a primarily egregious leviathan trampling right (6) ISRAEL {IS}{A}{Eg...s}{Le...n} over {R}
28 Cheat cleared contents of portable shelters (5) TENTS conTENTS
DOWN
1 Cops detailed rules on drug possession by people (9) POLICEMEN {POLICy}{E}{MEN}
2 That woman's seniority overcomes a beginner in team with legacy (8) HERITAGE {HER}{In}{Team}{AGE}
3 Basically someone erected a small idol depicting Eashwar at beach (7) SEASIDE Acrostic
4 Awful mistake, kept note outside with book on aisleway essentially (8) TERRIBLE {T{ERR}I}{B}{aisLEway}
5 State not in a mess (6) NATION*
6 Trolls out of shelves, not being quiet (5) ELVES shELVES
9 For starters, husband exhibits ardour, treats with warmth (4) HEAT Acrostic
14 Gains in surplus covered by states' 50% subsidy (9) INTERESTS {IN}{staTE{REST}S}
16 Say, workers pass current through fuses (8) SOLDIERS {SOLD{I}ERS}
18 Opinions of conservatives binding the man (8) THEORIES {T{HE}ORIES}
19 First neutralise arrogant husband, to be put away for being wayward (7) NAUGHTY {Ne...e}{hAUGHTY}
21 Jumps, misses ball and drops (6) OUNCES bOUNCES
23 Opening was primarily short and brilliant (4) SLIT {Sh..t}{LIT}
24 Nurses can access records, examine, sedate at the very outset (5) CARES Acrostic
Reference List
Sweetheart = JO, Kelvin = K, Son = S, Ecstasy = E, Ball = B, House = RS(Rajya Sabha), East = E, Husband = H, Right = R, These days = CE, The in French = LE, British = B, Cheat = CON, Drug = E, Note = TI, Book = B, Quiet = SH, Fuses = SOLDERS, Conservatives = TORIES