No 11879, Friday 16 Dec 2016, xChequer

ACROSS
7   Shed in swamp (6) SLOUGH [DD]
8   Risk of cook poaching duck egg in order to get a thrill (3,5) FOR KICKS {CK} in {RISK+OF}* Anno for CK not clear (Addendum - {RISK+OF+CooK}* - See comments)
9   Corrupting element condemned extremely bold appeal (3,5) BAD APPLE {BolD+APPEAL}*
10 Lament transferred role (6) MANTLE*
11 Union members shutting shop in anger (5) WRATH {W}{RAT}{H} Anno pending - See comments
12 New plan is to retreat like a monkey (6) SIMIAN {N}{AIM}{IS} <=
14 Frozen to doorpost, teeth chattering (6,2,3,4) ROOTED TO THE SPOT*
17 Roughly handled a slipper covered with diamonds (6) MAULED {M{A}ULE}{D}
18 Tremor alarms ringing, meaning … (5) MORAL [T]
22 … counsel wife in bed (6) LAWYER {LA{W}YER}
23 Tend to get rash, with virtue occasionally falling prey to change (8) ERUPTIVE {VIRTUE+PrEy}*
24 Walker showing way with a wave (8) STROLLER {ST}{ROLLER}
25 Turn at bowling for skipper? (6) TRUANT*

DOWN
1   Essentially place no more contaminated? (5,4) CLEAN ROOM {pLACe+NO+MORE}* &lit
2   Sport perhaps, where dog collects article (6) MUTANT {MUT{AN}T}
3   Son having joint at school gets sent out (5) SHIPS {S}{HIP}{S}
4   Bottom pinched in grope, quite tacky (8) FRUMPISH {F{RUMP}ISH}
5   Proceeds in public wearing arms (8) WINNINGS {W{INN}INGS}
6   Section indisposed to control limit in bank facility (5) SKILL {S}{banK}{ILL}
8   Rocket seen, for alien, a signal (4,2,4,3) FLEA IN ONES EAR*
13 Small pastry dish, value not very high (3-2-4) VOL-AU-VENT*

15 British soldier climbing hill? Absolute nonsense (8) TOMMYROT {TOMMY}{TOR<=}
16 Peculiar part of amusing paradiddle perhaps (4,4) DRUM ROLL {RUM} in {DROLL}
19 Production in public place (6) OUTPUT {OUT}{PUT}
20 Used to be terrible, heartlessly delivering blow (5) WASTE {WAS}{Te...lE}
21 Relish having son in tow, over and over again (5) GUSTO {GU{S}T<=}{O}

GRID