An out of turn xChequer and I'm in the soup. Requesting Kishore to complete it as I have to go out to take Cocoa to my wife's school for Pet day.
Special thanks to those who chipped in with answers and annos. Well solved, everyone.
ACROSS
7 Know any foreign national? (6) KENYAN {KEN}{ANY*}
8 Resounding when mouth's almost stuffed! (8) VOICEFUL (VOICE FUL
9 Elated state seen in heroic dancing (8) EUPHORIC {E{UP}HORIC*}
10 In conclusion, appeal succeeded (6) ENSUED {EN{SUE}D}
11 Cow died at the BBC, but that's not shown (5) DAUNT (D+ AUNT
12 Bring up born pest (6) BROACH (B ROACH)
14 Sailor's mock oath in airy rhyme, bit remiss to include verse (6,2,7) SHIVER
17 Devout covering some distance to get to sermon (6) HOMILY (HO(MI)LY)
18 Fire in bachelor lounge (5) BLAZE {B}{LAZE}
22 Buzz in lively bar dance (6) RHUMBA (R(HUM)BA*)
23 Eccentric mint chewing poetic setter's on the way (8) IMMINENT {IM{MINE}NT*}
24 Meet, rest, off in planes (8) JOINTERS (JOIN REST*)
25 Is trapped male governed by reason? What an odd idea! (6) WHIMSY {WH{I{M}S}Y}
DOWN
1 Abuse the dummy winning heat hands down (9) BEQUEATH (ABUSE THE)* around Q=heat)
2 Dash north to support husband featuring in extravagant publicity (6) HYPHEN {HYP{H}E}{N}
3 Outrage essentially shown in nasal discharge (5) SNORT {SNO{
4 Intellectuals can be drunk at times before it boomerangs (8) LITERATI {LIT}{ERA}{TI<=}
5 Alibi has me mixed up protecting respected Indian lady (8) MEMSAHIB (
6 Cauliflower head with excellent stuffing made well (5) CURED (E in CURD)
8 Offices of sovereign representative failing to meet regal commitments (13) VICEROYALTIES (VICE ROYAL TIES)
13 Duty surrounding Nazi rule fraught with insanity (9) CRAZINESS {C{R}{AZIN*}ESS}
15 Passionate opening keeping everyone initially on edge (8) VEHEMENT (E HEM in VENT)
16 Summoned after sheep ran wild (8) RAMPAGED (RAM PAGED)
19 Long flowing garments left privates unconstrained (6) LUNGIS
20 Flights picked up some flowering plants (5) PHLOX (~FLOCKS=flights)
21 Diving ducks appearing as small seagulls (5) SMEWS {S}{MEWS}
GRID