Across
Wild bird Alfred claims caught crustacean (11)
I haven't cracked this one yet — but Fifteensquared have:
Anagram (wild) of BIRD ALFRED , containing (claiming) C (abbreviation for caught, in cricket scoring).
Strike from account upon reflection (3)
French king welcoming black knight's comic sidekick (5)
I haven't cracked this one yet — but Fifteensquared have:
ROI (French word for king) containing B (abbreviation for black, as in 2B pencils), then N (abbreviation for knight in chess notation). Comic as in comic-book: Batman’s colleague.
Insane character possessed substance according to Spooner (9)
I haven't cracked this one yet — but Fifteensquared have:
Spoonerism of HAD MATTER (possessed substance). Character from Alice in Wonderland .
Fundamental right abolished in tribunal by German city (9)
I haven't cracked this one yet — but Fifteensquared have:
T [r] IAL (tribunal) without the R (abbreviation for right), after ESSEN (city in western Germany).
Underworld organisation's original address (5)
I haven't cracked this one yet — but Fifteensquared have:
HELL (underworld) + first letter (original) of O [rganisation). Address = greeting.
Avian enclosure finally providing emu with home (7)
I haven't cracked this one yet — but Fifteensquared have:
PEN (enclosure) + final letters of [providin] G [em] U + IN (home = at home, as in “will you be in this evening?”).
Hands round stimulant before start of exhausting dance (4)
I haven't cracked this one yet — but Fifteensquared have:
R + L (abbreviations for right and left hands), around E (abbreviation for the drug ecstasy = stimulant) + starting letter of E [xhausting]. A fast country dance, especially in Scotland.
Film star adding line to marriage vow (4)
I haven't cracked this one yet — but Fifteensquared have:
L (abbreviation for line) after I DO (traditional form of the response in a marriage service).
Series of images Oscar found in container (7)
Some children worried about person with pet? (5)
Green Spanish boy taken in by virgin in Mexico (9)
Climber close to insanity following strange vision on river (9)
I haven't cracked this one yet — but Fifteensquared have:
Last letter (close) of [iv] Y , after an anagram (strange) of VISION , after PO (river in Italy, a favourite with crossword setters). Climbing plant, or at least some varieties of it are.
Colour of boot locker some say (5)
Article written by married geezer (3)
I haven't cracked this one yet — but Fifteensquared have:
AN (a form of the indefinite article) next to M (abbreviation for married, in genealogical records). Geezer = old-fashioned slang for a man.
Picked up seasonal acting work for starters (11)
Down
French retaining old castles in perpetuity (8)
I haven't cracked this one yet — but Fifteensquared have:
FR (abbreviation for French) containing O (abbreviation for old), then KEEPS (keep = the inner fortified building within a castle). For keeps = slang for forever.
Shameful young lady for example supported by government (8)
I haven't cracked this one yet — but Fifteensquared have:
DEB (abbreviation for debutante = young lady in upper-class society) + AS IN (phrase used to introduce an illustration of how a word can be used = for example), with G (abbreviation for government) at the end (at the bottom, in a down clue = supporting).
Textile from mill in Enniskillen (5)
Artist overlooks minute aphid regularly seen on flower (7)
I haven't cracked this one yet — but Fifteensquared have:
RA (abbreviation for Royal Academician = artist), before (above, in a down clue = overlooking) M (abbreviation for minute) + alternate letters (regularly seen) of [a] P [h] I [d], then ON . Generic name for a few species of wild flowers (and also some salad leaf vegetables).
One asks hard questions of horseman touring Donegal on vacation (7)
I haven't cracked this one yet — but Fifteensquared have:
RIDER (horseman or horsewoman), around (touring) D [onega] L (on vacation = after emptying).
Every week Earl enters pub in revealing clothing (9)
I haven't cracked this one yet — but Fifteensquared have:
EACH (every) + W (abbreviation for week) + E (abbreviation for earl), inserted into BAR (pub = drinking establishment).
Odd elements of Brontë tale laid bare her courage (6)
I haven't cracked this one yet — but Fifteensquared have:
Odd-numbered letters of B [r] O [n] T [ë] T [a] L [e], then [h] E [r] with the outer letters removed (laid bare). Bottle = slang for courage. Though if you follow the derivation of “to lose one’s bottle” from Cockney rhyming slang, it actually means something rather less polite.
King enthralled by quirky retro horror (6)
Don urged criminal to crush society's outsiders (9)
Shorter son goes missing? Don't mention it! (8)
I haven't cracked this one yet — but Fifteensquared have:
NOT A [s] TALL (shorter), without the S (abbreviation for son). Not at all = don’t mention it = a politely self-effacing response to thanks.
Wicked deeds within heartless Mafia factions (8)
Pure milk when endlessly churned becomes more clotted (7)
Don't stop dupe ringing Henry in East end (7)
Decoration Englishman in Australia is given twice (6)
I haven't cracked this one yet — but Fifteensquared have:
POM (Australian slang for an English person) twice. A decorative ball of wool tufts, a bundle of glittery fibres used by cheerleaders, or a similar decoration.
Germany abandons plan to adopt new flag (6)
I haven't cracked this one yet — but Fifteensquared have:
[d] ESIGN (plan) without the D (abbreviation for Deutschland = Germany), containing (to adopt) N (abbreviation for new).
Judge fair queen to be fool (5)
Type letters or click words in the clue