Across
Mark recalled problem for English sailors inhaling toxic gas (9)
I haven't cracked this one yet — but Fifteensquared have:
A reversal (‘recalled’) of NO LIMES (‘problem for English sailors’ – a reference to the use of lime juice on British ships to prevent scurvy) round or ‘inhaling’ CO (carbon monoxide – ‘toxic gas’)
Child leaving room is cautionary signal (5)
I haven't cracked this one yet — but Fifteensquared have:
ch AMBER (room) with ‘ch’ (child’) leaving
Abolishes America's boring yearbooks (7)
I haven't cracked this one yet — but Fifteensquared have:
ANNULS (abolishes) round or ‘bored by’ A (America)
Political theory damages around eleven million (7)
Providing backing Republican needles producer (3)
Former editor's shockingly grim persona (11)
Futile look for Tesla to hire (6)
I haven't cracked this one yet — but Fifteensquared have:
EMP t Y (futile) with the ‘t’ (Tesla) replaced by LO (look)
Container for food damaged in crates (8)
Discharged old Conservative put off returning (8)
I haven't cracked this one yet — but Fifteensquared have:
EX (old) C (Conservative) + a reversal (‘returning’) of DETER (put off)
Hard ground that's next to fire (6)
Final bit of activity in street with cat (11)
Smear fish expert (3)
Top vicar regularly cutting blood supply (7)
I haven't cracked this one yet — but Fifteensquared have:
v I c A r (alternate or ‘regular’ letters) in or ‘cutting’ an anagram (‘supply’ – in a supple manner) of BLOOD
Jewellery back in store unless there's book missing (7)
Good-for-nothing throwing away son's drink (5)
Smart to fill nitrogen gas in restricted area (9)
I haven't cracked this one yet — but Fifteensquared have:
FLY (smart) in or ‘filling’ N (nitrogen) OZONE (gas)
Down
Domino perhaps placed the wrong way by female in team (5)
Share authority mostly about snare (7)
I haven't cracked this one yet — but Fifteensquared have:
A reversal (‘about’) of PART (share) NAM e (authority) missing the last letter or ‘mostly’
Winner's bloomer losing head in tactical game (11)
Healthcare pioneer's inventory-maker? (6)
I haven't cracked this one yet — but Fifteensquared have:
Someone who makes an inventory or ‘list’ might be referred to as a LISTER
Southern African plants close to arena blocking unbeatable rival (8)
Character of Scottish child boundless (3)
Game time for girl with diary? (7)
I haven't cracked this one yet — but Fifteensquared have:
BRIDGE (game – of cards) T (time) – a reference to ‘Bridget Jones’ Diary’
Structure stems from anarchy (9)
Difficult to wear old valet uniform for Hollywood star (11)
I haven't cracked this one yet — but Fifteensquared have:
HARD (difficult) in or ‘wearing’ O (old) LIVERY (‘valet uniform’)
Cosmetic change at last absolutely fooled old women (9)
I haven't cracked this one yet — but Fifteensquared have:
E (last letter of change) YES (absolutely) HAD (fooled) O (old) W (woman)
Perhaps Vandyke to confess to approach in threatening manner (8)
Brief firm collision I ignored (7)
1D set up Oscar and Olivia? (7)
I haven't cracked this one yet — but Fifteensquared have:
ROD (‘staff’ – 1d) RIG (set up) O (Oscar in the phonetic alphabet) – we had to check Olivia Rodrigo – she’s an American singer, songwriter and actress
Object from the point of view of object is left out (6)
Make a mess of unloading new musical instrument (5)
Pole for stirring hot air periodically hidden (3)
I haven't cracked this one yet — but Fifteensquared have:
h O t A i R (alternate letters ‘periodically hidden’)
Type letters or click words in the clue