Across
Beautiful tree: feel bad with any being cut down in such a manner (9)
Wide gap, though with nothing removed (5)
Trendy to inject heroin after a litre drink (7)
I haven't cracked this one yet — but Fifteensquared have:
A L[itre] + H[eroin] in COOL (trendy)
The American author eliminating last hero from Greece (7)
22a
I’m a Bishop, tucking into meagre vegetarian food (4,4)
Uncooked meat? Experts brutally cut it open at first (10)
I haven't cracked this one yet — but Fifteensquared have:
PROS (experts) + (CUT IT)* + O[pen]
Is ‘zero’ accepted by English logician? Meaty stuff (7)
I haven't cracked this one yet — but Fifteensquared have:
IS O in VENN (John Venn, famous for his Diagram)
Publication I term running short regarding glamour (7)
I haven't cracked this one yet — but Fifteensquared have:
MAG[azine] I CAL[L]
Offering easy growth in computing? Clear hype’s misplaced (10)
I haven't cracked this one yet — but Fifteensquared have:
(CLEAR HYPE’S)* – hyperscale (not in Chambers) is “the ability of an architecture to scale appropriately as increased demand is added to the system”
See 13
Something described as metallic burning smell surrounding one … (7)
I haven't cracked this one yet — but Fifteensquared have:
LIT (burning) + I in HUM (smell)
… largely swamping one with some water? (7)
Keen to abandon Right, adopting Left as standard (5)
I haven't cracked this one yet — but Fifteensquared have:
L in EAGER less R
Roux perhaps about to backtrack after redesign of kitchen (9)
Down
Artefact of old battle? Bet Valhalla came alive (9,6)
Government official, large, appearing in bowler? (8)
I haven't cracked this one yet — but Fifteensquared have:
L in PACEMAN (fast bowler, in cricket)
Easy thing to miss top edge (4)
Drive through South American country with Northern seed (8)
I haven't cracked this one yet — but Fifteensquared have:
DR[ive] in CHILE + N
Position occupying excellent section in the current circumstances (2,2,2)
I haven't cracked this one yet — but Fifteensquared have:
SIT (to position) in A1 S[ection]
Top of sluice losing liquid on a big scale (8)
I haven't cracked this one yet — but Fifteensquared have:
S[luicing] + WEEPING
Convincing information secured in crib (6)
Police operation – dastardly con, apparently (3,8,4)
Showed precipitation without precipitation? That’s twisted (8)
Exploit making no sense, kidnapping one farmworker (8)
I haven't cracked this one yet — but Fifteensquared have:
MILK (to exploit) + I (one – again!) in MAD (making no sense)
Beguiling warmth after cold (8)
Servant carrying some Londoner’s scalding soup (6)
Refined behaviour inclined to take a back seat around Cambridge University (6)
Dark and perverted, though not at first (4)
Type letters or click words in the clue