Across1 Having a compassionate disposition could deter adherent unexpectedly (6-7)
TENDER HEARTED [Anag of DETER AD]10 Consistency in business, therefore, needs acceptance of note (9)
COHERENCE [Therefore is HENCE, RE is note??] 11 Non-polluting, energy-saving transport (5)
CYCLE [Direct Clue]12 Protection, for example, in All India Services initially (5)
AEGIS [EG (For Example) in AIS(All India Services) A eg IS]13 Send one to Coventry (9)
OSTRACISE [Direct Clue]14 Observe, say, chap as a sailor (6)
SEAMAN [Observe is SEE, sounds like SEA, chap is MAN]16 A way with popular member to get the batsman out (5)
STUMP [Fits in here, but explanation??]19 Territory of a true leader of monks (5)
REALM [REAL(True) + M(Leader of Monks)]20 Fuss with a socialist and get admired (6)
ADORED [ADO(Fuss) + RED(Socialist)]25 Overplay a boring notice for "Nymph on a Tree" (9)
HAMADRYAD [Explanation please??]26 Purse distributed — splendid (5)
SUPER [Anag of PURSE, distributed is the anagram indicator, splendid is the definition]27 Chaplain with a fancy drape (5)
PADRE [Anag of DRAPE, fancy is the anagram indicator, Chaplain is the definition]28 Very clear and, at home, a mastermind about love (9)
INGENIOUS?? [Seems to fit here but explanation??]29 Crowd fear rent apart the footballer (6,7)
CENTRE FORWARD [Anag of CROWD FEAR RENT, apart is the anag indicator, footballer is the definition]Down2 A sound picture of the innards (8)
ECHOGRAM [Direct Clue??]3 Daughter's hidden skill in game (5)
DARTS [Daughter's is DS Skill is ART, so D ART S]4 Such sampling is haphazard (6)
RANDOM [Direct Clue]5 Toothless creature in garden gallery (8)
EDENTATE [EDEN is garden, TATE is gallery??]6 Crime lead worked out and salvaged (9)
RECLAIMED [Anag of CRIME LEAD, worked out is the anag indicator, salvaged is the definition]7 Geometrician that copper lied about (6)
EUCLID [Anag of CU(Copper) + LIED]8 Fights for discarded bits of food (6)
SCRAPS [Direct Clue]9 Latin, always a means of exerting pressure for getting something (5)
LEVER [L + EVER(always)]15 The last word daughter reportedly intended as a correction (9)
AMENDMENT [Explanation please??]17 Period of recreation to prevent Jack becoming dull (8)
PLAYTIME [Direct Clue]18 It covers an opening, an opening to a carriage? (4,4)
TRAP DOOR [Direct Clue??]21 Packing first of underwear in clothing under compulsion (6)
DURESS [Explanation please??]22 Figure has changed on exercise (5)
SHAPE [Direct Clue]23 A smear that the GM used wilily (6)
SMUDGE [Anag of GM USED]24 Slow movement in music (6)
ADAGIO [Not too sure]26 Wines build muscle (5)
SINEW [Anag of WINES]
10 across - Re is a note as in Do, Re, Me, Fa, So, La, Ti, Do
25 across - Overplay = HAM + A + boring = DRY + notice=Advertisement=AD
28 across - at home = IN + ( a mastermind = GENIUS about love=zero=O)
21 down - first of underwear = 1st letter of underwear = U packed in clothing = DRESS
In 28ac "Very clear" appears to be a typo for "Very clever".