Across
Oxygen particle takes reverse path (5)
I haven't cracked this one yet — but Fifteensquared have:
O (chemical symbol for Oxygen) + BIT=”particle”; around R (reverse, e.g. on a car gear stick)
Where to apply ointment in difficult situation (2,3,4)
Cold aspect of ex-PM and team? (5,4)
Dale against exiting passage (5)
I haven't cracked this one yet — but Fifteensquared have:
[V]-ALLEY=”Dale”, with V (versus, “against”) exiting
Contracting medic to attend ruler (7)
One, in a bold move, goes to ball game (7)
I haven't cracked this one yet — but Fifteensquared have:
definition: a game played with a top that is spun on a string I=”One”, inside anagram/”move” of (a bold)*, plus O=round letter=”ball”
Paper X (5)
See 29 Down
Force leader, caught in bad lie, to U-turn (5)
I haven't cracked this one yet — but Fifteensquared have:
PM (Prime Minister, “leader”) reversed/”to U-turn”; in anagram/”bad” of (lie)*
Son stifled by ‘worthy’ ancestry (7)
Managing to get somewhere between flights (7)
City was first to back paper (5)
Wicked bank’s terrible racket (6,3)
Detailed, informed arguments against current state (9)
Death-dealing, gross mobster? (5)
Down
Low point is to make a cheeky gesture (4)
Barking, Rome, Cuba, York initially (8)
I haven't cracked this one yet — but Fifteensquared have:
definition: the name of the Roman settlement that has become York anagram/”Barking” of (Rome Cuba)*
About a half-hour is more than enough for this place (4)
Future turnover recovering from collapse? (6,2)
Be there when it’s all over, tense inside (6)
I haven't cracked this one yet — but Fifteensquared have:
AT END=”when it’s all over” with T (tense) inside
Panties, or a pants split? (10)
A parrot has nothing on butterfly (6)
I haven't cracked this one yet — but Fifteensquared have:
definition: the name for a species of butterfly A (from surface) + POLL=”parrot” + O=zero=”nothing”
Brace of salmon introduced on river (4)
Went out with old hat (5)
Check hacked PIN notices (10)
Ordinary, standard prison camp (5)
Theft of rubbing outside church (8)
Earlier conviction in US large town not leader’s main concern (8)
Trumpet band secures record backing (6)
I haven't cracked this one yet — but Fifteensquared have:
definition: to announce or display some information very prominently SASH=”band” around: LP=long playing music “record”, reversed/”backing”
Prominent Republican all but crushes lives – that’s self-evident (6)
Blue feathers (4)
In control, if temperatures pick up (4)
18a
Get rid of a bad mood, say, pedestrian-style? (4,3)
Type letters or click words in the clue