Across
Removes protection for privates and retrieves mission data (8)
Extremely haughty getting put into elite category (6)
I haven't cracked this one yet — but Fifteensquared have:
[ extremely ] H (aught) Y getting put into PLUM ("elite")
Caught dealer supplying 1/6th of friends in New York? (8)
Type of light half of street order (6)
Live and thrive, having lost nothing (5)
Ask the mad criminal for final impression (5,4)
Brilliant old American lineage (12)
Alternative theatres rely on getting specialist treatment here? (6,6)
Concrete is securing link – these are the facts (9)
I haven't cracked this one yet — but Fifteensquared have:
REAL ("concrete") + IS securing TIE ("link")
Delay yearly exercise ... (5)
... still producing interference (6)
Almost overwhelm gang? That's shocking (8)
Mature reason that stops one revealing programme (6)
Follower provides commercial gas lease (8)
I haven't cracked this one yet — but Fifteensquared have:
AD ("commercial") + He (helium, so "gas") + RENT ("lease")
Down
Unravel mystery of sea creature existing in freshwater river? (6)
Arrogant supporter on way to enlightenment (6)
Apathy turning to defiance if son replaces daughter (9)
I haven't cracked this one yet — but Fifteensquared have:
INDOLENCE ("apathy") with the D (daughter) replaced by S (son) becomes INSOLENCE ("defiance")
Spurned, I fail badly; did I mean to say that? (8,4)
Couple pull up with difficulty? (5)
I haven't cracked this one yet — but Fifteensquared have:
Triple definition
Circuit put on copier – it keeps the end clean (3,5)
Encounters rebel king's army chiefs inside – they're watchful creatures (8)
I haven't cracked this one yet — but Fifteensquared have:
MEETS ("encounters") with R (ebel) K (ing's) A (rmy) [ chiefs , i.e.heads, so first letters] inside
Adds all of raw mixture to make a healthy dish (7,5)
Strips back process, putting it into standby (5,4)
Cleaner is master, generating great presence (8)
Dull recording broadcast by one of our cousins (5,3)
Prone to prosecute, hiding fix (6)
Elevation moving top to bottom, 12.5% (6)
I haven't cracked this one yet — but Fifteensquared have:
HEIGHT ("elevation") moving its top (H) to bottom would become EIGHT-H ("12.5%")
Virgil, I admit, contains work from another poet (5)
Type letters or click words in the clue