Across
Posh bloke is a Tory bastard? Not unknown (6)
I haven't cracked this one yet — but Fifteensquared have:
anagram/”bastard” of (is a Tory)*, minus letter ‘y’=”unknown in maths
Usual performance quietly meets with approval (6)
Changed key before end of ballad (7)
I haven't cracked this one yet — but Fifteensquared have:
ALT=”key” on computer keyboard + ERE=”before” + end of balla-D
Plant roses at front except in centre (7)
I haven't cracked this one yet — but Fifteensquared have:
R-oses at front + BAR=”except” inside HUB=”centre”
Big Tech (and Ted's dosh) could possibly bring material success (3,5,7)
Good book plausible on the surface (4)
Sure to make a move after trick one's played (10)
I haven't cracked this one yet — but Fifteensquared have:
CERT- A -IN=”Sure”, “to make [the letter] A move” to the end, after CON=swindle=”trick”
Invaders ignoring rule left with ground unclaimed (2-4-4)
Idiot holding back star pupil? On the contrary (4)
Steal script craftily when Charles is inside dressing (8,7)
I haven't cracked this one yet — but Fifteensquared have:
anagram/”craftily” of (Steal script)*, with KING=”Charles” inside
Doubly small for a defender (7)
Want to carry gun but denied (7)
Chance to wear revolutionary dress (6)
Stay on team (6)
Down
Rare element of sexual excitement with female — I'm keeping out, essentially (9)
I haven't cracked this one yet — but Fifteensquared have:
RUT=”sexual excitement” + HEN=”female” + I’M around the centre/essential part of o-U-t
Soldiers arrested by police officers around base (6)
I haven't cracked this one yet — but Fifteensquared have:
OR (other ranks, “soldiers”), inside “police officers” DI (Detective Inspector) + DS (Detective Sergeant) both reversed/”around”
Getting on coach is traditional (3-6)
Child's yellow — doctors gathering round (5)
I haven't cracked this one yet — but Fifteensquared have:
OR=gold colour=”yellow” inside GPS (General Practitioner-S, doctors), all reversed/”round”
Roars during day end squabbling (8)
I haven't cracked this one yet — but Fifteensquared have:
anagram/”squabbling” of (end)*, inside/”during” THURS=”day”
Desperately want to be in Conservative Party? (5)
Makes an enemy of worker and worries deeply (11)
Dirty resort has improved on the surface (11)
See something useful in the kitchen (3-6)
Bothered by independence, right — judged it to be divisive (9)
I haven't cracked this one yet — but Fifteensquared have:
I (independence) + R (right) + RATED=”judged” divided by IT
Advice about protecting endlessly vulnerable — it's a nasty place (8)
I haven't cracked this one yet — but Fifteensquared have:
TIPS=”Advice” reversed/”about”, around NAKE-d=”endlessly vulnerable”
Polluted river in which crew's emptied effluents (6)
Dancing ladies beginning to strip off — this couldn't be better (5)
I haven't cracked this one yet — but Fifteensquared have:
anagram/”Dancing” of (ladies)*, with the beginning of S-trip taken off
Square up over drinker's last bottle (5)
I haven't cracked this one yet — but Fifteensquared have:
EVEN=”Square” reversed/”up” around drinke-R even=square as in ‘we’re even/square’=’we don’t owe each other anything’
Type letters or click words in the clue