Across
One word and all hell's let loose — they'll pay for this (5,4,4)
I haven't cracked this one yet — but Fifteensquared have:
Anagram of ( … let loose ) [ I(Roman numeral for “one”) + WORD plus ( and ) ALL HELL’S ].
Close up Oscar sees audience's dirty (7)
I haven't cracked this one yet — but Fifteensquared have:
O(letter represented by “Oscar” in the phonetic alphabet) + { twice the homophone of ( … audience’s ) “ see “, OR, if you like, twice the acronym for “see” in text messaging, as in “c u” } + homophone of ( audience’s ) “lewd”(dirty/obscene).
Rarely on time, you held policeman up (7)
I haven't cracked this one yet — but Fifteensquared have:
Anagram of ( Rarely /exceptionally) ON TIME containing ( … held ) U(“you” in text messaging as in “c u”).
Calculate silence about United's the end for Ole? (5)
I haven't cracked this one yet — but Fifteensquared have:
GAG(to silence/to restrain someone from vocalising) containing ( about ) U(abbrev. for “United”) + last letter of ( the end for ) “ Ole “.
Joke repository includes one that's extremely hard-hitting (9)
I haven't cracked this one yet — but Fifteensquared have:
PUN(a joke/a play on words) + CHEST(a repository/a large container) containing ( includes ) I(Roman numeral for “one”).
Considered scoundrel comedian at heart (5)
I haven't cracked this one yet — but Fifteensquared have:
RAT(a scoundrel/a no-gooder) + middle 2 letters of ( … at heart ) “ comedian “.
Backing pub name — on reflection like the Oracle (9)
Relation's arrival welcomed by mother (9)
Crowd's last intimidating display in capital (5)
I haven't cracked this one yet — but Fifteensquared have:
Last letter of ( …’s last ) “ Crowd ” + HAKA(an intimidating display, once used by Maori warriors to disconcert their opponents, and nowadays performed by the All Blacks before their rugby matches).
Play country in Africa — no trouble over touring (9)
I haven't cracked this one yet — but Fifteensquared have:
Mali(country in Africa) contained in ( … touring ) reversal of ( … over ) [ NO + GYP(trouble in the form of pain or discomfort) ].
Duo use lime to catch bird (5)
Mostly Messi is accommodated — it's what we do with celebrities (7)
I haven't cracked this one yet — but Fifteensquared have:
“Lionel”(Messi, Argentinian footballer) minus its last letter ( Mostly … ) containing ( … accommodated ) IS .
That bloke with nice bum about to join conversation (5,2)
Laments about teachers not getting money — hypocrites! (7,6)
I haven't cracked this one yet — but Fifteensquared have:
PLAINTS(laments/complaints) containing ( about ) “masters”(school teachers) minus ( not getting ) “m”(abbrev. for “money”).
Down
Battle to get space at bar (9)
Work out one day's been wasted (or two) (5)
I haven't cracked this one yet — but Fifteensquared have:
“deduce”(to work out/to form a conclusion) minus ( one …’s been wasted ) “d”(abbrev. for “day”).
Give birth with assistance (5)
Old Vlad in the Netherlands climbing? Only it's flat! (5,4)
I haven't cracked this one yet — but Fifteensquared have:
Reversal of ( … climbing , in a down clue) [ O(abbrev. for “old”) + ME(Vlad, our setter using the self-referential pronoun) contained in ( in ) NL(ISO 3166 code for the Netherlands) ] + SOLE(the one and only).
Ride like this for dosh? (9)
Gone to pick up tea inside (or coffee) (5)
I haven't cracked this one yet — but Fifteensquared have:
LATE(gone/no longer alive) containing ( … inside ) homophone of ( to pick up ) “ tea “.
Elbow possibly cut by stake not a sporting injury (7,6)
Locate patient lost in market area (9,4)
Exaggerated performance of car? Admits being misled (9)
Angry gripe about disgraceful advantage given only to a few (9)
Passing nurse in van (9)
Grumble increase's ultimately trivial (5)
Cuts? Nothing's been mentioned (5)
Animal in one pen being mounted (5)
Type letters or click words in the clue