Across
Put together advance to break plot (7)
Deceptively rich clothing for one going commando (3,4)
I haven't cracked this one yet — but Fifteensquared have:
Can't parse, sorry!
Sound hesitant in signing for another quiz (4)
Lady who ran distribution for artist … (4,6)
… hired gymnasium, showing stuff that's avant garde (4)
It's offensive ignoring Victor when in a bad way, financially (8)
Oscar called? Call back — he insists on marching (9)
Spoil quiet swamp (5)
Knock over playground equipment? Sounds a bit rude (5)
Your howl about importing nitrogen causes major dispute (6,3)
I haven't cracked this one yet — but Fifteensquared have:
*(your howl) [anag: about ] importing N (nitrogen)
Where royalty may get comfort, it's said (8)
Finish off job quickly but lose some information (4)
As expected, not betraying class (4,2,4)
Urgent approach when evacuating large part of the US (4)
I haven't cracked this one yet — but Fifteensquared have:
U (rgen) T A (pproac) H [ when evacuating ]
Conservative type on warm day regularly becomes passionate (7)
I haven't cracked this one yet — but Fifteensquared have:
TORY ("conservative type") on (w) A (r) M (d) A (y) [ regularly ]
Clever clogs finish up, when permitted (7)
Down
Clean up the Italian and German and US medical program (7)
US city harbours a very quiet waste containment facility (5)
I haven't cracked this one yet — but Fifteensquared have:
NY (New York, so "US city") harbours A + PP (pianissimo, in music, so "very quiet")
When it's due, celebrity is about to come out (7)
I haven't cracked this one yet — but Fifteensquared have:
<=(ETA (estimated time of arrival, so "when it's due") + NAME ("celebrity"), is about )
In the middle of June, Swiss friends get silly (6)
I haven't cracked this one yet — but Fifteensquared have:
[ in the middle of ] (j) UN (e) (s) WIS (s) (fri) E (nds)
Company pitch a line — this may be the result (9)
Sums made by relatives embracing a Latin way of working (7)
Sad mainland loser? He was very successful at sea (7,6)
Wrong moment to go after rising criminal, admitting nothing (2,7)
I haven't cracked this one yet — but Fifteensquared have:
*(moment) [anag: wrong ] to go after [ rising ] <=CON ("criminal")
Varied characters Croat actor played, for example (7)
I haven't cracked this one yet — but Fifteensquared have:
"Croat" and "actor" are "examples" of an ANAGRAM
Legend upset by article describing old empire (7)
Fury when abandoning run leads to power loss (7)
I haven't cracked this one yet — but Fifteensquared have:
OUT(R)AGE if R (run, in cricket) was abandoned, would become OUTAGE ("power loss")
Passion of East Ender trying to sound more tough (6)
Something obscure on book may help to sell it (5)
I haven't cracked this one yet — but Fifteensquared have:
BLUR ("something obscure") on B (book)
Type letters or click words in the clue