Across
The same check is catching firm making a birdhouse (7)
I haven't cracked this one yet — but Fifteensquared have:
DO (do = old-fashioned abbreviation for ditto = the same) + VET (as a verb = check = verify), containing (catching) CO (abbreviation for company = firm).
Strongly smelling substance affected half of horses (7)
Difficulty in getting up in an ancient language (15)
Comprehend inclination to bag runs (5)
I haven't cracked this one yet — but Fifteensquared have:
LEAN (inclination: it’s not usually a noun but the dictionaries say it can be), containing (bagging) R (abbreviation for runs, in cricket scoring).
Call carvery at last: turkey? It’s not what you would call swan! (9)
I haven't cracked this one yet — but Fifteensquared have:
BELL (as in “give me a bell” = slang for a telephone call) + last letter of [carver] Y + FLOP (turkey = slang for a failed project, especially a film or stage show). A failed attempt at diving into water, in which the diver lands flat – as distinguished from a swan dive (also called a swallow dive), which is the classic style.
Republican intervention - item that’s edited out? (9)
Study year all set to go (5)
Tower to be evacuated? Excellent suggestion (5)
I haven't cracked this one yet — but Fifteensquared have:
T [owe] R (evacuated = inner letters emptied out) + ACE (slang for excellent). Trace = suggestion = a barely-detectable flavour or scent.
Small bird hurried to good heather (9)
Film company having value after good performance of course? (9)
Norse girl that mostly welcomes soldiers (5)
In a romantic move dropping English I garbled romantic Latin phrase (15)
I haven't cracked this one yet — but Fifteensquared have:
Anagram (garbled) of IN A ROMANTIC MOV [e] I , dropping the E (abbreviation for English). Latin phrase meaning “love conquers all”; also seen as “amor omnia vincit”, because Latin can be fairly flexible about word order.
Skill in twirling shown by last character in number one circus act (7)
I haven't cracked this one yet — but Fifteensquared have:
ART (skill) reversed (twirling), then Z (the last character of the alphabet) in PEE (number one = slang for an act of urination).
City of London to stop importing second drug (7)
I haven't cracked this one yet — but Fifteensquared have:
EC (postcode of the East Central London area known as the City of London) + STAY (stop = to hold back, as in “stay your hand!”), containing (importing) S (abbreviation for second). Psychoactive drug also known as MDMA or E.
Down
Austrian physicist active person adopting very quiet line (7)
I haven't cracked this one yet — but Fifteensquared have:
DOER (someone who gets things done = active person), containing (adopting) PP (pp = abbreviation for Italian pianissimo = musical notation for very quiet) + L (abbreviation for line). Austrian physicist Christian Doppler, who described the “Doppler effect” in which the observed frequency of a wave changes with the relative velocity of the source and the observer (for example the perceived change in pitch of an emergency vehicle’s siren as it drives past you).
An excess of words for this in an anagram? (15)
Rector in church suspended about half of LP record (9)
I haven't cracked this one yet — but Fifteensquared have:
R (abbreviation for rector), in CH (abbreviation for church) + ON ICE (suspended = delayed or held in reserve), around the first half of L [p]. Though I can’t help thinking that “half of a two-letter abbreviation” is a rather odd way to clue a single letter. Chronicle = a historical record of events.
Corporation getting billions after introducing hard part of glove (5)
I haven't cracked this one yet — but Fifteensquared have:
TUM (corporation = slang for a fat belly) + B (abbreviation for billions), with H (abbreviation for hard) inserted.
Object to everybody entering cold prehistoric area (9)
I haven't cracked this one yet — but Fifteensquared have:
ALL (everybody) inserted into C (abbreviation for cold) + HENGE (a prehistoric structure, as in Stonehenge).
Significant expression of surprise about lunch? (5)
Once and for all a hit I fancy? (15)
I haven't cracked this one yet — but Fifteensquared have:
Anagram (fancy) of ONCE + FOR ALL A HIT I . Clue-as-definition: the 1970s song Hotel California by the Eagles, which is one of their best-known hits.
Work steadily after harvest to try again (7)
Pub and church restricting chimney’s sway (9)
I haven't cracked this one yet — but Fifteensquared have:
INN (pub) + CE (abbreviation for Church of England), containing FLUE (chimney).
Supporting justice is tougher unfortunately (9)
Leading politician blocking most admired person for key spot on board? (7)
Old American seen around North Arkansas food store (7)
I haven't cracked this one yet — but Fifteensquared have:
GRAY (American spelling of grey = grey-haired = old, so “old American”) around N (abbreviation for north) + AR (abbreviation for the US state of Arkansas). A grain store.
Film version that is suppressed by Missouri (5)
A lot of attempts to keep time may be unconvincing (5)
I haven't cracked this one yet — but Fifteensquared have:
TRIE [s] (attempts) without the last letter (a lot of . . . ), containing (to keep) T (abbreviation for time).
Type letters or click words in the clue