ACROSS
6 Spoiling for a nice black coffee (4,4)CAFE NOIR
9 Old wrongdoing led to blackmail (6)EXTORT
10 Open (adj) fair alternately (4) AJAR
11 Clueless like a cadet embracing navy (10)UNINFORMED
12 I'm a bum trashing a city (6) MUMBAI
14 Best to reduce number by 10% of sight (7) OPTIMAL
15 Tennis pro, a real maverick character finally gets a fitness consultant (8,7)PERSONAL TRAINER
18 Arranged or set up theatrical groups (7) TROUPES
20 Parking line boundary gives surety (6)PLEDGE
22 K-kid? (10)GRANDCHILD
23 Give information on mobile during speech (4)SELL
24 Have fewer returns for a craft (6)VESSEL
25 Closet as ideal hiding place for lay-by (3,5) SET ASIDE
DOWN
1 Mock entrance exam before one for real (4)JEER
2 Liquid remedy (8) SOLUTION
3 Consider right hiking wages before income tax (3,3) SEE FIT
4 Engaging rule breaking attorney in operation (10)ATTRACTIVE
5 Fictional butler, extremely utile and loyal (4,4)TRUE BLUE
7 Old French region depicted in European journal (5) ANJOU
8 They might help nosily in mending relationships (13) RHINOPLASTIES
13 Graduates before long to first musician (10) BASSOONIST
16 Return from hospital department, reeky all over (5,3) ENTER KEY
17 Criticise one song essentially lacking pace (8)RAPIDITY
19 Sauce or jam (6)PICKLE
21 Arctic for example is up top (5)GELID
23 Indifferent and same old same old leaders (2-2) SO SO
:clap::clap::clap: Splendid!